ok, ive done some research and found out about ro water. ive just looked for some systems and there very expensive, Ā£250 was the cheapest. ill have to save and use my tap water left to sit for 24 hours and then ph adjusted. ill buy a oscilating fan and a ph pen tommorow. in the end i will buy all, its just i spent 225 on a beginners system and the liquid and chart ph thing was all i got. i have nutrien canna aqua vega and flora, are these any good? as you say theres no point buying cheap, once i get used to knowing what to look for and reading ph etc ill be fine. btw, wud i b better of using bottled water than my tap? just in the meantime before i get the ro purifier? Thanks for helping

p.s ive read formulex is good for soaking ya rockwool in before using so ill buy some of that also. have u heard of that? and wud u soak the large rockwool just the same as the small?