The LFS can check all your water parameters except your lighting and temperature. You could have temperature swings from the tank being heated up sitting by a window... or maybe it's just too high or too low. You may be leaving the light on too long or not enough, or randomly turing them on/off - best solution is get a timer. Other fish may also be bothering it while you're not looking, causing stress and an ich outbreak.... Just things like this that can stress a fish that your fish store can't do a water test on. _________  |