whats an h202 solution??? can i just flush them out with water? if i take all the plants out and dip them in a bucket of fresh water to clean them out then clean out the whole tray and everything will that help if its root rot? the roots are very thick and white but there might be like a lil bit of water here and there in the tray thats causing the rotting kuz its not draining properly.. . but how do i flush it the easiest way? shoudl i take them out or should i just flush it through the system and let it clean it liek that?