hey guys thanks a lot for your replies, this is a really good idea, buy some RO.

I see what you're saying now - there really is _nothing_ I can do, gee that sucks, I thought you could buy fertilisers/bloom feed that is specifically for hard water that turns the deposits into harmless, more useful compounds? No?

Humm this sucks and thanks for replying.. I will try some RO to see if this is the problem

I really think there should be a sticky on this. Someone should make one..

Peace,
Denial
denialisback Reviewed by denialisback on . Hard Water, and that yellowing after your buffers run out Hello All, A lot of you may have spotted my enthusiasm around here to grow a small amount of the great herb in my growcabinet. I always seem to have this problem. I'll veg for 6 weeks or so in my 7.5 litre pots, using biobizz All-Mix, no problems, PH stable between 6.2 and 6.8 - thanks to my 1litre Nitric Acid bottle PH adjuster. I know it isn't particularly recommended to use a Nitric Acid in a non hydro medium, but I use very small amounts, perhaps 1 ampule NitricAcid, per Rating: 5