using good old irish moss peat with25% perlite, superthrive 1mm per 4 litres and just started to introduce bio-grow 2mm per litre ill increase it up to 5mm in the coming weeks, going to veg on 18/6 for another few weeks, heres a pic i took 5 mins ago, the ballast must be ok for mh and hps,everything seems to be going well, just hope it doesnt explode and burn the place down!!!!!!!!!!!!!! this is day 19