Keep solution cool
If you’re using a hydro system, then you need to keep the nutrient solution cool. There’s a number of ways to do this depending on your budget.
- Connect your system to a chiller. This will enable you to keep the solution cool and at a consistent temperature, maximising oxygen availability. Chillers can be quite expensive, but are perfect in some months.
- If you’re looking to keeps your costs low, whilst also lowering solution temperatures try putting an ice pack or two into your reservoir. This works particularly well on NFT systems. It helps to lower the temperature of warm nutrient solution, so it can be recirculated over the plants roots. The best thing is, this’ll only cost you a few quid to try.
Remember, in most hydro systems if the solution temperature gets higher than 21oc, you’re going to find that oxygen levels reduce, which will affect the growth of your plants.