Howdy HydroBushDoctor, STOP USING THE CHLORINE SOLUTION, it's killing the plants!!!!! I use the city tap water, it has a tiny amount of chlorine in it, but not enough to kill off my plants. To prevent root rot and other unwanted organisms from growing in the reservoir, keep the water well aerated, cool (temperature between 62° F and 70° F), and block out ALL light leaks. One can also use the hydro-guard, but I prefer the other method (temp, air, and no light) for my grows.