Green algae is not completely bad, just a small amount of green algae. It can protect the root system and increase oxygen, but it can't be over-propagated. Excessive reproduction will cause changes in water quality, promote the growth of bacteria and compete for nutrition.
How to prevent the excessive growth of green algae in hydroponic plants;
1. Change the water frequently. Clean the roots of plants and hydroponic containers every time.
2. Diluent drugs, such as potassium permanganate, carbendazim and hydrogen peroxide, can be added to the hydroponic water to inhibit green algae. Physical adsorption of activated carbon particles and charcoal blocks can also be used.
3. Use opaque hydroponic containers to block the sunlight needed for green algae to reproduce. The outside of the transparent container can be decorated with hemp rope or cloth, and can also be shaded.
4. Some goldfish, shrimps, snails, etc. can be planted in hydroponic containers, which can inhibit the green algae to some extent, but drugs that inhibit the green algae cannot be added at the same time.
5. Try to keep hydroponic plants in a cool and ventilated place for maintenance. Don't add too much water, just immerse the roots for 2/3 and let them breathe freely.
A small amount of green algae in hydroponic plants is inevitable. Changing water frequently, washing roots and containers are the key points, and rotten roots should be cleaned up in time. I hope my sharing will help you!