I have been experiencing snail die off in my tank. At first I thought it might be my temps, but since, I have kept my temps at about 77 degrees, with the exception of some swings. All my ranges are in order, 8.3 ph 0 trates 0 trites 0 NH3 etc..., but still I have the die off. I have tried Mexican turbos, Margaritas, Astreas, and Red Collars. All with the same results! I have now been told that this might be due to electrical currents within my tank. Has anyone ever had to deal with this, and if so have you had good results after installing a grounding probe?