Originally Posted by Rusty Trichome
First step for me would be to get the ph checked. You can even take a sample of your water to any fish store and they will test it for free. (tell 'em you are thinking of buying a fish tank, but neighbor told you water was too acidic) Then take the ph info to your local nursery to ask how to adjust it.
The fish fret shouldn't do any damage, but how often do you water, and do you let the soil dry out between waterings?
Beyond that, how are you with clones? I wouldn't just chuck all that time and effort out the window.
Blindly saying you need iorn or magnesium sulphate to green it up could possibly do more damage if your ph is out of whack.