How to Grow Hydroponic Tomatoes? Steps & Pictures 

 April 6, 2022

By  admin

Grow tomatoes hydroponically with these step-by-step pictures!

The “how to grow tomatoes in water” is a guide that includes steps and pictures. The guide will help you grow hydroponic tomatoes, which are much easier than regular ones.

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Have you heard about hydroponics before? Without using soil, that quick and healthful approach to produce vegetables?

It also happens to be one of the most effective methods for growing ANYTHING. This is especially true when it comes to hydroponic tomatoes.

You may anticipate GIGANTIC, HEALTHY, and SUPER-TASTY hydroponic tomatoes if you grow them properly.

They will also grow at a quicker rate than crops. Not only that, but you won’t have to worry about bugs or infections.

Isn’t it an excellent suggestion? Let’s have a look at everything you’ll need to make it happen!

What Are the Requirements for Growing Hydroponic Tomatoes?

Tomatoes are usually simple to cultivate. They will not, however, grow on their own, as succulents do.

Consider the following elements to keep them healthy and thriving:

Medium for Growing

You’ll forget about potting soil completely. Hydroponics uses a Medium for Growing instead.

This Medium for Growing does the same job as soil but without any of the drawbacks.

Of course, the Medium for Growing will depend on what hydroponic system you’re using (and maybe a little more expensive than soil itself), but it is a lot healthier.

Here are some Medium for Growings to consider:

  • Coir de coco (coconut husk)
  • Expanded clay (pellets or pebbles, also referred to as “grow rocks”)
  • Gravel
  • Hay
  • Perlite is a mineral that is used to make (volcanic rock)
  • Foam of phenolics (peat foam)
  • Rockwool is a kind of wool that is used to (volcanic rock, coke, and limestone)
  • Sand is a material that may be used (sterilized)
  • Sawdust is a type of wood dust (or mulch)


Because you’re removing the soil, you’re also removing a large portion of the nutrients. You won’t be utilizing compost or manure, so the tomatoes will have even less nutrients to work with.

In such circumstance, what can you do?

This is when nutritional mixtures come into play. While regular fertilizer (powdered or pelleted) may be used, liquid blends have no rivals.

Even yet, the greatest results need the usage of at least two separate liquid fertilizers. Fertilizers containing macronutrients, such as:

  • Nitrogen is a nutrient that is found (primary nutrient)
  • Phosphorus is a mineral that is found in the soil (second most important)
  • Calcium is a mineral that is found in (vital for yields)
  • Potassium is a mineral found in many foods (vital for yields)
  • Magnesium
  • Sulfur

When your tomatoes begin to develop, they will be really useful. However, they are often insufficient.

That’s why a second fertilizer, ideally one with micronutrients, is a great idea. You’ll find the following micronutrients among micronutrients:

  • Boron
  • Zinc
  • Manganese
  • Iron
  • Copper

Just keep in mind that tomatoes will need more nutrients in certain circumstances (such as when the fruits begin to develop) than in others. Later, we’ll show you how to use them.

ADVICE: Tomato fertilizers are usually a good option. These blends were created particularly for this plant.

pH Levels in Water

Some individuals may have difficulty producing tomatoes, and the primary cause is most likely high-pH water.

Most home water, believe it or not, has a pH of 8 or higher. For tomatoes, this is much too alkaline; they require acidic water with a pH of 5.5 to 7.

Corrosion is the cause of elevated pH values in tap water. Because acidity in water causes rust in pipes, water delivery companies often make the water more alkaline to avoid this.

Because hydroponics need a lot of water to work (thus the name), you’ll want to be sure the water is acceptable. Check the pH of your tap water before beginning your hydroponics. You’ll have to manually adjust the pH if it’s greater than 7.

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Artificial or Natural Light

Whether you’re growing tomatoes in the garden or in hydroponics, you’ll need a lot of light.

They flourish in direct sunshine and suffer in areas where there is too much shadow.

This will be a no-brainer for outdoor hydroponics. Simply set them in a location that receives at least 6 hours of daylight. Keep the fruits with at least 12 hours of daylight if you want them to develop quicker and larger.

When growing tomatoes inside, though, getting adequate light may be a challenge. Grow lights and other artificial alternatives come into play here. The quantity of light would be almost the same in such instance (at least 10 hours).

Temperatures that are consistent

A steady climate is the final thing hydroponic tomatoes need. Your tomatoes will perish if you can’t keep the temperature between 55 and 80 degrees Fahrenheit at night and 60 to 80 degrees during the day.

Many appliances, such as heaters and vents, work in this area. They give the warmth that tomatoes need to grow.

If you’re growing them outside in a warm climate, the second appliance may not be required.

If you can afford it, invest in grow tents and greenhouses to help maintain a more consistent temperature.

Step-by-Step Instructions for Growing Hydroponic Tomatoes

You may now begin producing tomatoes in a hydroponic system. You’ll need to be ready for the task since hydroponic systems aren’t as simple as they seem. However, you must remain calm, since this isn’t rocket science.

The following are the measures to take:

The first step is to choose a hydroponic system.

You must first choose an appropriate approach.

There are a variety of hydroponic systems to choose from, each with its own method of producing tomatoes. Tomatoes grow nicely with any of them, so you don’t have to worry about it too much.

However, you must evaluate your requirements as well as the available space. Some hydroponics take up more room and use more water than others. Similarly, some are more difficult to construct but will enable you to grow more tomatoes, while others are simpler to construct but will not provide as much area.

TIP: Because you’re probably a newbie, it’s usually a good idea to start with a beginner-friendly strategy. Hydroponic kits, some of which are specifically designed for tomatoes, are available for this purpose and may save you a lot of time and effort.

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Step 2: Locate the Ideal Location

You certainly can grow your hydroponics outdoors. As long as the water runs freely, there should be no issues.

However, there isn’t much purpose in that. Because your tomatoes will be exposed to pests, their development may be hampered.

As a result, the ideal location is always within a greenhouse or grow tent. If you don’t have access to one of these, an enclosed indoor area (such as a garage, a backyard shed, or even a patio) can suffice.

But there’s a catch: the tomatoes need a warm atmosphere to grow. It’s also important to keep the humidity low. Otherwise, the tomatoes can have a hard time.

CONSIDER THIS: Adding polyethylene coverings or transparent walls to outdoor hydroponics might be enough to keep pests away from the tomatoes.

Install the Grow Lights in Step 3 (If Needed)

Nothing can assist you guarantee that the space is perfect more than a set of grow lights.

If you’re growing them inside, artificial fluorescent or HPS lighting are really beneficial. They help your plants grow more steadily and efficiently assimilate nutrients.

WHAT TO KNOW: Transparent walls and roofs in greenhouses may eliminate the need for grow lights entirely. If you’re utilizing a grow tent, though, you should consider acquiring a pair.

Set up the Medium and Seed Trays in Step 4

The tomato seeds may now be planted.

Of course, you’ll have to plant them in the Medium for Growing of your preference. Most likely, you’re choosing Rockwool or expanded clay, as they work with pretty much any hydroponics system.

It’s critical to soak the material first, regardless of your choice. The material should be moist in every block or section.

Place the material in the seed trays after that (if any). It’s also possible that a homemade pot will suffice.

Allow the seeds to sprout to complete the process. This might take anywhere from 5 to 15 days.

Step 5: Make sure the seedlings are well-lit.

When the seed sprouts and seedlings begin to develop, they must be exposed to adequate light. This might be because of the grow lights or because of the sunshine itself.

The importance of light at this time is crucial. You must expose the developing tomatoes to light for AT LEAST 12 HOURS.

REMEMBER: Sunlight and grow lights, particularly in the summer, may be harmful. If as all possible, keep the roots covered to prevent injury.

Install the Plants in the Hydroponics System in Step 6

Those seedlings will mature into adult plants sooner rather than later. You must first install them in the hydroponic system before that can happen.

When do you realize it’s time to relocate them? This is the time when you observe roots sprouting away from the media. When the seedlings have been developing for 10 to 18 days, something occurs.

As you’re transferring the seedlings to a new place, consider adding more Medium for Growing (if the roots are overgrowing too fast).

Step 7: Promote Growth by Pruning

The plant will mature into an adult in the following 40 days. The primary stem will sprout many branches. Some will disperse to the flanks.

They should be pruned.

When growing hydroponic tomatoes, you must chop off any branches that are too far to the sides. This not only keeps the plant upright, but it also encourages it to expand.

ALSO CONSIDER: Using a stake to support the tomato can help it grow straighter. Later on, the yields will be higher as a result of this.

Pollinate the Blossoms (Step 8)

The plant will begin to blossom soon enough.

Insects assist the blooms in pollinating themselves in the wild. In a hydroponics system, this is less likely to happen, therefore you’ll have to do it by hand.

Fortunately, there is nothing to be concerned about. Here are a few steps to take:

  • A cotton swab or a delicate paintbrush would suffice. Makeup may be applied using a powder brush.
  • Await the appearance of the first flowers. Allow the petals to initially bend back (1-2 days).
  • The brush may then be used as a pollination driver. Bring pollen to the pistil by touching the pollen-filled stamens (cone-like section of the flower) (the green tube-like portion in the center of the flower).

If feasible, do this with all of the blooms. Each bloom you pollinate increases the likelihood of a tomato developing later.

Step 9: As Tomatoes Grow, Alter Nutrients

It’s worth changing the water and nutrients once you’ve pollinated the blooms.

Replacing the water in the reservoir with fresh water is a fantastic idea. Then, concentrating on nitrogen, potassium, and calcium, supply the nutrients.

This should boost yields, resulting in more and bigger tomatoes.

Step 10: Allow Tomatoes to Grow (and Harvest)

Soon enough, your tomatoes will begin to produce. In certain circumstances, this might take up to 80 days, so be patient if necessary.

This shouldn’t take long if you pollinated the tomatoes properly.

Once the fruits appear, you may wait for them to mature before harvesting.

In your own hydroponic garden, you’ll get excellent and juicy tomatoes.

How to Grow Tomatoes in a Hydroponic System

You have a good understanding of how to cultivate tomatoes. But, when the plant develops, how do you care for it?

Here are some pointers that could be useful:

Maintain Consistent Temperatures

This has already been said, but it bears repeating.

Tomatoes dislike temperatures below 55 degrees Fahrenheit throughout the day. They should get a maximum of 80 degrees.

Anything that goes too far up or down will wreak havoc on the tomatoes.

TIP: If the temperature in your room is too hot in the summer, you can always use a fan to cool it down. This should also help to lower heat.

Correct Fertilizer Application

For faster absorption, the nutritional blends you’re utilizing should be liquid. Pellets and powders perform the job, but they contaminate the water (dirty).

It’s usually advisable to combine the fertilizer with water ahead of time to ensure that the nutrients are well-diluted. Then you may start the pump or whatever hydroponics system you’re using.

ADVICE: Avoid using organic fertilizers since they degrade more slowly and cause even more problems in your system.

Test the pH of the water on a regular basis.

Even if you use a filter to maintain the pH of your water at the proper level, it might still drop or rise too much.

Testing it at least once a week is the best approach to avoid this. In this instance, a pH meter or test kit might be quite useful.

Make sure the pH maintains between 5.5 and 7. Anything below or above that will need action.

RELATED: What Will Be the Best Soil Test Kit in 2022?

Most Commonly Asked Questions (FAQs)

Q1. Can pesticides be used on hydroponic tomatoes?

You won’t need pesticides if you cultivate them inside. Bringing natural pesticides like lacewings and ladybugs, as well as tomato buddies, may be enough for outdoor hydroponics.

Q2. What is the rate of growth of hydroponic tomatoes?

It is dependent on the kind of tomato you have planted. Some types require as little as 50 days to mature, while others take up to 70 days. Their size is what separates them. The quickest-growing kinds blossom and yield tomatoes in a shorter amount of time.

Q3. Do hydroponic tomatoes have a pleasant flavor?

Yes. Because they aren’t exposed to bad soils, pests, or illnesses, they actually taste better than wild tomatoes.

Q4: How do you keep hydroponic tomatoes alive?

This method, also called as staking, entails inserting a tiny stake, pole, or board near to the stem. If you tie the plant to the piece, it should stay upright. Attach a thread to the top of the plant that pulls up for an even straighter plant. This might also aid in growth.


CERTAINLY, your hydroponic tomatoes will be sweeter, larger, and healthier.

You should have no trouble producing those tomatoes if you follow the procedures above and take all of our advise into mind.

This may need a little more work and time than normal for beginners. For an experienced or skilled gardener, though, this may be as simple as 1-2-3.

WHAT ARE YOU WAITING FOR, IN ANY CASE? Those hydroponic tomatoes aren’t going to grow on their own!

The “hydroponic drip system for tomatoes” is a way to grow hydroponically. The process requires a tray with holes, and it has to be placed on the ground or in a container. It also needs an air pump, tubing, and nutrients.

Frequently Asked Questions

How long does it take for tomatoes to grow in hydroponics?

A: It generally takes about 2 years for a tomato seed to grow into an average sized tomato plant.

What do I need to grow tomatoes hydroponically?

A: Tomatoes require a lot of water, so in order to grow hydroponically you need an equal amount of nutrients. They also need higher than usual amounts of light and air. In addition, they can be grown indoors or outdoors but not both at the same time as this would cause too much competition for resources inside your system.

How tomatoes grow step-by-step?

A: Tomatoes are grown by planting seeds, then waiting for the plants to grow into large fruits and ripen. The next step is harvest, which can be done in a few ways depending on what type of tomato you’re picking. Some tomatoes may just need to wilt while others will need help from some other means such as blanching or freezing.

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Emil Schoene

Born and raised in Austin, TX I come from a background of home renovation. By helping my family in my younger years with their construction business, I learned the ropes quickly and as I grew it became my passion that I still do today. Looking to share my knowledge with others. I invite you to leave comments on any post as I know you will have questions that you are not finding anywhere else.

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