1st timer in over my head ..

BLAZE IT !!! whats up peeps... well ive had my lil 1's for bout 4 days now.. got them pretty much in tha same condition there in more or less..
iv just been addin water so that tha cubes dont dry out.. so my q's was how what am i doin wrong ? lol and is a 600w light to much for them ??

They look overwatered and burned. Are you giving them distilled water with a ph around 5.8? Are you using any nutrients? 600w is fine, keep it about 2ft away from the plants. What's the temp in the room? Any Fans?