2nd bubbleponic grow!!

Well guys im back nd gettig ready to start my next grow. My first plant was a huge success and i now feel confident to try to do bigger and better. I'm gna start with a 10 plant set-up. So I now have a new question for ya'll...if im using a 55 gal. drum as my resevoir am i supposed to completely drain it every 2 weeks cuz thats when i upped the nute level on my plant was every 2 weeks and doesnt salt levels build-up so i would have to change it every 2 weeks right?? does this make sense? i plan to go with 4 mh/hps 600w lights?? will this be enough for 10 girls?? my last plant that i grew well everything under the colas was still very lime green and stuff and i figured maybe that was because i used only a 400 hps?? will using 600's prevent this or is there something else i gotta do?? im gna grow some feminized big bud!! anyone have any experience with this strain?? ahhh i cant wait to start another grow...it was soo much fun and im ready to start postin pics!! i think you guys will be very satisfied with my new set-up and stuff!!

bump!!!!!!!!!!!!!

run some flush solution for a few hours before res change it will take care of any salts as far as the light is concerned 400w is capable of some amazing shit but if you are going for 10 fems more is better personally i only put up too 8 plants under my 400w but my tray has more the do with that than the ablilities of the 400w which someone correct me if im wrong i believe 400w is good for a 4x4 area

nope for me 400 is no good....i used a 400 for my last grow nd was completely dissatisfied....none of the bud under my four main tops got any light....they were lime green as hell on harvest day....i trashed about 2 ounces of bud because it didnt photosynthesis properly......but thanks anyways!!

had same set-up as you got same results upgraded to 600w. changing over to ebb& flow 8 plants i'll keep watching to see how you do if your gonna spend the money for upgrades, power ,nutes & all that you gotta go for the yield anyway thats where i'm at keep us posted

oh yeah they reccomend 5000 lumens per sq.ft. for best growth if thats any help my growroom is 4x3ft. i got good results but only in area right brlow the light the rest was only half assed covered i put part of the blame on cheap reflector but got a good deal on 600w. with a good air cooled reflector that you can adjust your light coverage on i' getting everything dialed in now