I put in Tetra Safe Start to address an ammonia spike/get back on track. This fish started flashing about ten minutes after I put the stuff in. I put in just enough to treat six gallons. I shook it really well, and then used a syringe to pull from different depths of the bottle. Now she's hiding and clearly uncomfortable. What's up with this? Just before I put it in she was fine, and all I did before that was top off a half gallon (10%) fresh water (no change from the usual, and she's loved water changes so far) and take out most, but not all, of the carbon. Background: I treated my Tank with Maracyn and Maracyn 2, which seemed to take care of m Platy's poofy scales (not too bloated, though) and seeming light spots, which may have been missing scales. I did the full 5 day treatment, let her go for another 2 days soaking in it, doing 25% water changes to keep the ammonia down, since the meds at that strength gave me an ammonia spike. I already tried treating the sick Platy in the hospital tank, and she got sick in a day of returning her to the primary tank, so I treated the primary tank. I took out the meds with a little too much activated carbon in the filter compartment, plus 4 20% (at least 14 hours apart) water changes, which should get meds down to 41-42% even without the carbon. I also put a healthy Platy in isolation in the hospital "tank" (it's a 1.5 gallon jar with a bubble filter and a heater)to: Give the female a rest and let her establish territorial dominance in the primary tank Keep some live filter media It was getting only slightly elevated API readings of NO3 (.25), Nitrites (<.25 but not quite 0) and 5-20 Nitrates depending entirely on where I was with water changes. I put just a smidge of this Tetra Safe Start in the hospital tank too, and the male in there started freaking out, too, but he's not as bad. EDIT: The snails are fine. We have a home for most of them and are awaiting a good transfer opportunity. Probably Monday. Is any product out there going to perform as I expect it to?