i am growing ebb & flow, 2x4 tray, 20 plant sea of green, under a 1000w HPS. I just got this weird green algae looking stuff on one of the plants roots i am nervous that this could spread to my other plants and kill them. this is my first grow and everything has been okay up until now so any help would be great.
What happens if light hits them... It looks like the roots have algae on them, but the plants look great and seem to be growing fine. My Journal (just updated): http://forum.grasscity.com/hydroponic-grow-journals/969594-2x4-flood-drain-tray-first-grow-3.html
maybe they are ok for now. but if algae is not taken care of it can spread. youve seen pools or ponds with algae you wouldnt like your feet in that and either does your plant. h2o2(hydrogen peroxide) can take care of it. idk how much you should add thow
ok just googled it and they say you want 0.5-1% h2o2. so you have to do the math idk how much water you have