I have some algae build up on a small area of hydroton in my drip system. What is causing this and how can I get rid of it and keep it from coming back? EDIT- I just realized asking how to get rid of it was dumb. Ha
The last time I was at my local hydro shop, I noticed they were selling these little reflective skirts you can place around the base of your plants to keep algae from growing in your rockwool or hydroton. I suppose in principle anything that blocks light will work.