I begin to believe that my water test is not ok.. I have 2 aquarium test from Hagen, 1 with a PH between 4.5 and 9, and the other from 6 to 7.5... I've tested my tap water yesterday, and the 2 tests was over the max... a PH over 9?!? is it possible?
I was using some pure apple vinegar to bring it down, but I guess, like Ciratac said, it may leave unwanted stuff in the soil.. and maybe too much vinegar..
hmm.. what to do...
