Thank you so much for taking the time to help me. There is no visible ware on the suction cup, so I might be all good to continue the process of establishing the bio-filter. d:D
Hey guys I'll keep this brief. I'm starting an African Cichlid tank in a 29 gallon.
I attached the heater to the back-side of the tank, with the suction cups on either side
of the heater. A week later, I look at the heater's instructions more thoroughly and
realize the first instruction says...