Green Rocks

let me tell you whats up.i have a 2x4 grow area with a deep water cultivation system i have a air cooled hood with 1000w hortilux lite thats on 18 off 6 its 18in from the top of plants i use a 2.5-2-5 fert pH balance is 5.5-6.0 [attachment=o75016]


My problem is, is that the clay hydrophonice pellets have a green film is covering them is it good/doesnt matter/bad if it is Help PLEASE

I would guess algae, I dont do hydro but ive gotten algae in soil a few times.

Is your res light proof??

Do you wash your hydroton after grows?

A picture would be worth a 1000 words...

i dont have one on the rocks but i will post one