My Tetra 20-30 gallon submersible heater light keeps turning on and off. It's pre-set temperature is 79 degrees, and my tank is at 75. It is a new heater. I put it
No light heaters, or ways to safely occlude it? My Aquael Fix 2 blinking really disturbs my sleep, any tips? I've currently placed a piece of black tape, that works, but the
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