RUSTY TRICHOME i had 7 plants under a 400w and a 600w it was kush i had 10 liter pots and i veged for 4 weeks and flowerd for 8 weeks i used a canna P.K and a canna boost they were around 6.5 ft in an all mix soil some1 helped me who has grown for 10 years well he showed me what o do for about 3 weeks and then told me when to go from24/0 to 12/12 then came back to harvest and he took one look at it and just scratched his head and said f#'k knows what happened ....reason i now have 3 600w lights and im going to be useing a veg bio bizz and a bio bizz topmax and im getting a ph digital tester pen do you suggest anything eles that cam improve my poor poor yeild....ow and i really cant afford and co2 unless i can u a fire extinguisher which i can get for nothing as i have spunked a £550 budget on equipment and cuttings