Originally Posted by Rivercats
Do you have snails? The look like a group of round eggs.
I have one Midnight Black Snail.
I also have 6 Tetra Glofish & 5 Danio Glofish.
So... what kind of eggs? I actually know NOTHING about snail reproduction... they don't lay eggs do they?
This is on the surface of the heater which is mounted in the tank in a vertical orientation. How could fish have laid eggs on it?