thanks guys this has sorted my head out i was only using the RO to see oif it would increase yeild but im not convinced it does. So tap water in soil it is i cant do with the stress at the moment . Stinky thanks again as always exellent info and frank thanks for ur input mate.If i was just doing a plant ot 2 then i would stick with it till i sorted the probs out . I thought i had messed up the whole grow trying to sort the cal mag probs out but since is stopped using the cal mag and the ro last week the plants have taken off they are week 7 12/12 and have at last started to put on some weight.heres a pic of the aurora indica and ak48 and nothernlights im doing at the momnet .thanks again dave