My thanks to Leveckio, who kindly made some very useful suggestions to make this better.
Water Chemistry and Parameters
It's something most fish keepers should try to understand, but many of them do not. New keepers often aren't aware some of ...
What the @(#! is that on the aquarium glass?! It looks like an oval shaped translucent "thing" that is slowly moving around with some weird see-through internal organs.
OH S--T! THEY'RE EVERYWHERE!
They're freshwater limpets.
God I ...