All good here-no probs to mention:}sorry to hear
i don't think todd has ever had any problems with his flower... we have rely good water here though. maybe he will chime in.
Tanks are very stable,drip rate not touched for some time....
(Nitrate-20-35,PH 7.4-7.6,TDS-162 (122 @ tap)
Diet: Massivore,H2O wafers,Shrimp (cooked & uncooked),Talapia,Earthworms (every other month)