hi its my first grow , im just over 3 weeks in2 flowering.. im using my own soil mix that i found off the net.. is 10% sand 30% perlite 20% topsoil 40%potting soil..seems ok enough.. im using 5 litre pots approx how much should i be feeding them in litres and or millilitres... i have 5 plants 3 cheese 2 skunkberry.. im using bio nova products hydro supermix and pk 13/14... many thanx ..