hi im using vitalink bloom for feed on a timer it comes on 8x aday drips for 15 min and im using topmax flower boost at 4-5m per Litre 30 Litre tank @69F with a home made co2 setup,i have them in a 4 G13 ppp in 11 L pots 600w hps cooltube,carbon,tent ph 5.9 e.c 1.8,20 days in flower :)