i use bio bizz grow and bloom
i also suppliment with unsulphered molasses. i feed them molasses from abot week 4 -5 and only every other feed. i use 1 teaspoon of mollasses per litre of feed
i am a bit of an organic nut, part of the reason i started to grow was because there was a lot of shit in the weed for a while things like glass, sand and chemical spray, so i only use what nature provides and i know exactly whats in my weed no man made stuff at all.
what lighting do you have?
i recommend you get a soil ph meter if you are making up a mix, you can get cheap ones from any garden centre but make sure you clean it with a scouring pad before each use to get an accurate reading. getting this right in the begining saves you a lot of headaches later on.