There lookin better, 24/0 doesn't cause stress on the plants, more people say 24/0 is better then 20/4, obvisouly, the more light, the more photosynthesis go's om. the reason they go brown is because of the pH of the water, if you can, i would use spring bottled water, i was using Crystal Geyser, had a really low pH, but if you have to use tap water, which i am using now, since i got my pH kit, i would try and have a couple jugs sit out for a couple days with out the top on, since if i remember correctly, your not trying to spend too much money