help!!!!!!!!!! sos

i have a hyrdroponic setup. first time. the top of my rockwool cubes turned green????????????????????????????
bad? nutin to wory about? algea? how do i fix this? need some help please


please experts only reply

hydrogen peroxide. put some in a spray bottle and spray the affected area. After that add a little to every res change if will keep it from happening again. Good luck and happy growing

algae

Cover all areas exposed to light that are also white or clear plastic (black/green things are fine) with something that actually blocks the light including hoses, resevoir, tray and cubes too.

No more light to support algae, no more algae

wow thanks a bunch big f ing relief .