Water Tanks and Heaters
A supply of settled water and a stable nutrient solution temperature make irrigation predictable. Here you will find water tanks ranging from compact 47 L models to folding flexitanks of up to 750 L, along with immersion heaters that keep the solution above the critical threshold, even in a cold growing room.
Not sure which tank capacity and heater output to choose for your system? Write to us at info@higarden.eu and we will be happy to advise you.
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A water tank is the heart of every automatic irrigation system - it stores a supply of settled water or mixed nutrient solution and determines how often you need to top it up. Choose according to capacity, available space and whether you need a tank to remain permanently in place or want to assemble and store it away.
Fixed or folding?
- Fixed tanks - a stable solution that you set up and leave in place; the smaller AutoPot Tank 47 L serves a system of one to eight pots.
- Folding flexitanks - the textile AutoPot Flexitank, Gorilla FlexPro and Aquaking tanks can be assembled without tools in just a few minutes and put away just as quickly; capacities range from approximately 50 to 750 L.
Why use a heater in the tank? Roots do not absorb nutrients well when the solution is too cold - in hydroponics, it is recommended to keep the temperature roughly above 20 °C. An immersion tank heater with a thermostat will monitor this threshold for you. Glass immersion heaters are available with outputs of around 100 and 300 W; the lower output is suitable for smaller reservoirs, while the higher output is intended for large-capacity tanks and colder spaces.
How to choose the right capacity
- Number and size of plants - more plants mean higher consumption and the need for a larger supply between refills.
- Refilling interval - the less often you want to top up, the larger the tank you should choose.
- Space and handling - a folding flexitank is suitable for a confined growing room, as it takes up no space when stored out of season.
Frequently asked questions
Which tank heater do I need?
Choose the output according to the volume of solution and the room temperature - a heater of around 100 W is sufficient for small reservoirs, while large-capacity tanks or cold growing rooms call for 300 W. A model with a built-in thermostat, which maintains the temperature automatically, is ideal.
What temperature should the nutrient solution be?
In hydroponics, it is advisable to keep the solution roughly above 20 °C; in significantly colder water, roots absorb nutrients less effectively and oxygen problems may occur. We explain why and how to monitor the temperature in the article below.
Is a folding flexitank worthwhile compared with a fixed tank?
If you do not have a permanently allocated space or only need the tank for part of the year, a folding flexitank is more practical - you can assemble it without tools and fold it away after the season. For a permanent location, a fixed tank is generally more convenient.
Do I need to let the water stand in the tank?
Allowing water to stand helps chlorine evaporate from tap water and brings it to room temperature. The reservoir therefore also serves as a place to prepare the water before sending it to the plants.
Flexi tanks, Water tanks, cooling