Random SHOCK!

[lorenz0]

So today I realized I am getting random voltage in my tank. was about to feed the fish and was shocked the second my hand hit the water. First I thought it was my koralia because I heard they have had this issue, switched out my 425gph nano to the 250gph and still the same issue. Now I have the maxijet unpluged (if I wait 30min I will get shocked again). Besides those 2 the only other power supplied equipment is the heater.

Anyone been in this situation?