Which Hydroponic Nutrients Should I Choose?

So, are you looking for the best hydroponic nutrients? We know that choosing a food product can be overwhelming due to the multitude of options currently available in the market.

Liquid or powder?

A premixed mix or individual nutrients?

Regardless of what nutrients you are looking for, your goal is to grow vigorous plants that will give you high yields. But which nutrients will help you achieve this goal?

To help you find the best nutrients, let’s look at the differences between liquid and hydroponic nutrients and the factors that determine nutrient quality. Then we’ll introduce you to a range of products you can use to create a nutrient solution that will take your plants to another level.

Even if you think you are committed to liquid nutrients, we recommend that you read this. By the time you are done, you will find that you have changed your mind about your commitment to liquid nutrients.

Why do you need hydroponic nutrients? Growing your plants hydroponically means that you are not using soil to grow your plants. This means that you are not getting the nutrients that would be found there. Hydroponics can be great for plant growth. However, it takes a mineral nutrient solution to provide your plants with the elements and minerals they need.

What Are Hydroponic Nutrients?

Hydroponic nutrients are simply planted nutrients intended for use in a hydroponic system. Plants need 16 elements to grow. Carbon, hydrogen, oxygen, and nitrogen are available in the air and the water it receives. You have to add the rest as a nutrient solution.

The most important elements that plants must provide are nitrogen, phosphorus, and potassium. These are the elements that N-P-K refers to in bags of high-quality plant fertilizer. You also need calcium, magnesium, and sulfur as secondary nutrients. They also need iron, copper, manganese, zinc, molybdenum, boron, chloride, and sodium as micronutrients. Hydroponic nutrient solutions contain varying amounts of these elements.

Hydroponic nutrients аrе a liquid form оf thеѕе elements thаt саn bе added tо thе water іn уоur hydroponic system. Nutrients аrе readily available tо thе exposed root system. Sо уоur plants uѕе lеѕѕ energy tо gеt nutrients frоm thе soil. Thіѕ means thеу саn spend mоrе energy оn vegetative growth аnd fruit аnd flower production. Different plants have different nutritional needs. That is why it is important to know which elements your plants need. Choose a hydroponic nutrient solution that is best for what you are growing.

How To Choose A Hydroponic Nutrients

Hydroponic systems require a carefully crafted fertilizer or nutrient solution to grow optimally. Choosing the right nutrient solution is key to the health and production of the system.

There are several factors to consider when starting a hydroponic system or switching nutrient solutions.

Fertilizer form provides convenience

Whether you’re growing for fun or profit, the first thing to think about is the convenience and price of fertilizer.

As you’ll read below, hydroponic fertilizers come in two different forms: liquid and powder. If you’re a novice hobby grower you probably want a little less hassle (i.e. harder to make mistakes) like a liquid solution. While this type of solution is slightly more expensive, don’t forget the value of your time (and common sense!). For commercial hydroponics, powder forms offer more value in large quantities but require a little more skill to perfect.

Liquid Or Powder Nutrients

Liquid Nutrients

Liquid nutrients are more commonly used for hobby systems because they make adding fertilizer quick and easy. Fоr example, wе recommend a liquid nutrient solution fоr thе Farm Wall, аѕ mоѕt Farm Wall growers don’t hаvе thе time оr resources tо mix a powder fertilizer.

Powdered Nutrients

Powdered or dry fertilizers are usually sold as a two-part powder mix. The first part is calcium nitrate and the second part is the main nutrient mix.

If you’re using a powder mix, you want to make sure you mix the two powders separately and then combine them as a solution. (This is because Calcium Nitrate is a poor team player when dissolved. It dissolves better when mixed alone. Once dissolved in water, it can be added to the main nutrient solution.)

Most of these two-part mixtures are complete solutions, but some also require the addition of another compound (such as magnesium sulfate – also known as Epsom salt).

Although powdered fertilizers are more complicated to use than liquid solutions, the price offers a big price advantage. Since the nutrient solutions are mostly water (only a few teaspoons of powder are used per gallon of water), shipping large amounts of the solution is extremely expensive (i.e. you end up shipping a lot of water weight).

Larger hydroponic systems usually use powder mixes because you don’t have to pay the weight of the water for shipping. Another plus is that you can get powdered mixes specific to different crops – a strawberry mix, a lettuce mix, etc. (although this can also apply to liquid solutions).

To find out which type is a good hydroponic nutrient for you and increase your activities, consider how the two differ in the following categories.


Solid nutrients are much more concentrated than liquid nutrients. After all, water is the main component of liquid nutrients. While a pound of liquid nutrients may only last for a week, a pound of powder can last for months.

This higher concentration results in lower shipping costs and less storage space.


Dry nutrients can be stored longer than liquid fertilizers. That said, you can buy in bulk without worrying about the nutrients going bad. Also, powders are easier to store because of their above-mentioned increased concentration.


When it comes to nutrient use, you can probably imagine the difference between dry and liquid products. It is often easier to weigh out a small amount of powder than it is to measure out a small amount of liquid. Also, cleaning up spilled dry nutrients is easier than spilling liquid.

What Factors Determine The High-Quality Hydroponic Nutrients?

Now that you know the differences between liquid and powdered nutrients, let’s take a closer look at the latter. There are hundreds of dry hydroponic nutrients on the market, and choosing the best one can be difficult.

When choosing a dry hydroponic nutrient, there are several considerations to consider, including solubility, purity, stability, and nutrient mix. By studying these factors, you can choose a product that will make your plants tall and produce large flowers.


Many products indicate their solubility rates. However, it doesn’t matter if you don’t understand what it means. What exactly is solubility?

When you add dry nutrients to the water, you want all of the product to dissolve and form a homogeneous solution. Thе ability оf a product tо dissolve іn water іѕ knоwn аѕ іtѕ solubility. When a nutrient is 90% soluble, it means that 90% of the product dissolves in water.

If a product is not 100% soluble, a precipitate form.

Why is that important? Undissolved particles cannot get into a plant. That is, the insoluble part of the product is waste. At the same time, these solid particles can clog devices such as spot heaters and pumps.

If you don’t already know, high nutrient solubility is a must in hydroponic systems.

Two important factors affect the solubility of nutrients: the pH and the form of the nutrient. You may need to change the pH of your solution to get the correct pH for optimal solubility and nutrient availability. Don’t worry, it’s pretty easy. Once you’ve bought a food product, stick with it. That said, you must choose a product wisely.

hydroponic nutrients soluability


Just because a product contains nitrogen, phosphorus and potassium don’t mean it has everything! Some products contain fillers and impurities that you will both want to avoid.

When it comes to nutrients, you want low heavy metals and no plant growth regulators (PGRs) or pesticides. While avoiding these may sound obvious, they are high in hydroponic nutrients.

Why should you avoid products containing them? Let’s break it down for you.

Plant growth regulators, be it natural plant hormones or synthetic compounds, influence the growth and development of plants. Some stimulate apical dominance and others increase root growth or slow breathing. These substances can be helpful if you use them intentionally. However, you don’t want to be added to your plants if you don’t intend to.

When you apply nutrients that contain PGRs, you don’t know what unintended effects these products have on your plants. Because of the adverse effects, these PGRs can cause, it is wise to look for nutrients that these growth regulators lack.

Heavy metals such as cadmium, copper, lead, and mercury can also negatively affect plant growth. These metals can change important plant processes, slow plant metabolism, and reduce yield. Although plants need trace amounts of some heavy metals, including zinc and copper, large amounts of these elements can quickly damage plants.

Herbicides can also be found in nutrients, even if you don’t want them there. When these herbicides go into solution, your plants can adversely affect their growth.

pH and EC stability

When checking a nutrient solution for hydroponics, you want to check two main measurements: pH and electronic conductivity (EC). PH is a measure of how acidic/basic a solution is, and the EC essentially measures the number of salts in a solution.

The pH affects which nutrients are available in a solution. While some nutrients are most available at a lower pH and some are most available at a higher pH, a range of 5.4 to 6.0 is a good range for growth in soilless media. When you add nutrients to the water, they raise or lower the pH.

In addition to studying how the nutrients affect the pH, it is also important to consider how stable the nutrient solution remains over time. Some products form a solution that changes in pH over time, while other products form a more pH-stable solution.

Electronic conductivity is exactly what it sounds like – a measure of a substance’s ability to conduct electricity. While you probably don’t worry too much about growing crops, this measurement also provides information about nutrients.

When nutrients are added to a solution, they break down into positively and negatively charged ions, also known as cations and anions. These oppositely charged ions then act as electrical conductors. This means that a higher EC correlates with a higher content of salts. When the EC is too high, plants are susceptible to ionic toxicity and osmotic stress (when water is quickly removed from plant cells), and too low an EC can lead to nutrient starvation.

While all mineral nutrients increase the EC of a solution, some food products provide a solution with a stable EC and others a solution with a highly fluctuating EC. A stable EC is preferred because you can keep it in the optimal range without frequent adjustments.

Products For The Needs Of Plants

As you probably know, plants need different amounts of nutrients because they go through different growth stages. When they create vegetative tissue, they need large amounts of nitrogen. However, as they continue to bloom, nitrogen should decrease as the need for potassium and micronutrients increases.

To give your plants exactly what they need when they need, it helps to bring in various nutrients. If a brand only offers one mix of nutrients for the life of a plant, nutrients will become oversupplied in some growth phases and undersupplied in others.

Organic or synthetic (non-organic) nutrients?

Organic nutrients work best in runoff gardens, where water drains from the bottom of a bucket and is not reused, rather than in circulating hydroponic systems. This is because organic nutrients often contain particles large enough to clog pumps, small hoses, nozzles, and nebulizers. It is common to use organic nutrients for indoor growing with soil, soilless media, and coconut. Some companies are developing organic nutrients that they say work well with hydroponic systems.

Synthetic nutrients are the most common nutrients used in the hydroponic grow room, including growing the foods we buy and eat at the supermarket. These hydroponic nutrients can often be used in coconut and soil as well. Always study the nutrition label to be sure.

A quick note about organic nutrients compared to synthetic nutrients: the N-P-K numbers for synthetic nutrients are often much higher than for organic nutrients. This is because synthetic nutrients are more readily absorbed by plant roots than organic nutrients – the nutrients readily available to the plant are higher. This does not necessarily mean that there are more nutrients, just that they are released faster than the nutrients in organic products.


Finally, when choosing hydroponic nutrients, the cost is very important. That’s because it’s consistent, recurring costs. This is not just something you will buy if you regularly practice hydroponics at home. Keep in mind that dry hydroponic nutrients are generally much cheaper, but liquid options are easier to use.

One-piece systems are also usually cheaper, but cannot be adapted during growing cycles to accommodate different plants and changing requirements. However, even comparable options from different brands can have very different costs. Therefore, you must carefully weigh the long-term costs of choosing your hydroponic nutrients.

Can you grow hydroponics without nutrients?

Growing plants in a hydroponic system eliminate the need for soil. However, without soil, your plants cannot access the elements they need to grow. Your indoor garden will not grow without these vital elements and must receive them in the form of hydroponic nutrients. These are mixed with the water supply to your system. Many of these nutrient solutions are liquid, but can also be found in water-soluble powder form.

How Long Do Hydroponic Nutrients Last?

In your hydroponic system, your nutrients need to be replenished every 7-14 days. Refill your systems with fresh water every day. Keep in mind that the nutrient strength in the reservoir will also fluctuate as plants consume water and nutrients. If you switch nutrients more often, your plants will always get enough nutrients and your solution will have the correct pH.

In terms of shelf life, powdered nutrients last much longer than liquid ones. Properly stored in a cool, dry place, dry nutrients can be kept indefinitely. However, liquid nutrients can have a shelf life of 1 to 4 years, depending on the manufacturer and the specific ingredients in this solution. If you think you are holding onto your liquid nutrients for more than a year, it is best to contact the manufacturer.

Can I Make My Own Hydroponic Nutrients?

Buying ready-to-eat hydroponic nutrients is definitely the easiest way to keep your indoor garden well-nourished. However, you can also mix your own hydroponic nutrients to adjust the mineral content and have full control over what you add to your plants. The important thing is to understand the needs of your particular garden before getting started. Once you know exactly which minerals should be in your nutrient solution, you can get started.

A hydroponic nutrient solution consists of water, essential elements, and minerals. You can use fertilizer salts to get most of these elements. When mixing your solution, you need to study the ratios required for the specific plants you are growing, as well as the nutrient strength (PPM) you need. Putting together your own nutrient solution can be a bit tricky. For those new to hydroponics, it is usually best to start with ready-to-use solutions or you will endanger the life of your plants.

Knowing the basic nutrients all plants need to survive can help you better understand how and why hydroponic nutrients work. Knowing the specific nutritional needs of your indoor garden can help you decide which type of hydroponic nutrients to use. Having a basic idea of ​​the life cycles of your plants will also help you know when to grow certain nutrients and when to use nutrients to maximize their flowering.

FAQs – Frequently asked questions

Question: How can plants grow without soil?

Answer: One of the most frequently asked questions about hydroponics is how plants can grow without soil. The answer is hydroponic nutrients! In normal agriculture and the garden, plants receive nutrients from three places: the air, the water, and the soil. In the case of hydroponics, hydroponic nutrients replace the nutrients normally found in the soil and often add additional nutrients to maximize results.

Rather than growing in the ground, hydroponically grown plant roots are suspended in a hydroponic nutrient solution. Sometimes an inert medium is used to hang and support the roots rather than just the nutrient solution. The solution is made by mixing hydroponic nutrients with water. The solution is then delivered directly to the roots of the plant to provide all the nutrients that a typical plant would receive through the soil.

Question: Are hydroponic nutrients better than soil?

Answer: There is a lot of debate as to whether hydroponics is better than traditional farming and gardening. The truth is, both can be used properly to produce amazing results. Probably the main difference is that hydroponics provides the ability to more easily control and monitor the environment around the plants. This allows for a more focused approach to providing all the nutrients a plant needs to grow and thrive.

Question: Can I use hydroponic nutrients in the soil?

Answer: Hydroponics nutrients can certainly be used in the soil, although in many cases they can be excessive. Since hydroponic nutrients and fertilizers are specifically designed to replace nutrients in the soil, they are not really necessary for plants growing in the soil. However, they can still provide benefits and maximize growth potential. Some hydroponic fertilizers are marketed for general use. The cheapest option would, of course, be to use regular fertilizers specifically tailored to the soil.


Choosing the best hydroponic nutrients is one of the most important things you can do to ensure successful hydroponics at home. A good hydroponic fertilizer will make a huge difference in how well your plants will grow.

Since choosing a hydroponic fertilizer can be overwhelming, we hope our guide to choosing hydroponic nutrients has been helpful.

As long as you choose a balanced fertilizer that is hydroponic and use it properly, you should get good results. Reading user reviews can also be a very helpful tool in choosing a product such as hydroponic nutrients. Since these are recurring costs, you’ll want to be smart with where you shop.