So right as we were about to put our new betta in his tank, I noticed a bunch of bubbles at the surface of the water, looks like a bunch of bubble nests but with no fish😂 What could be causing this? Is it cause for concern?
I'm looking into switching to a sponge (or foam) filter.
My fishies can't stand the current caused by my (heavily baffled!) filters.
I'm not sure what brand is best?
Anyone use the one shown in the attachment..... ?
I have two ten gallon tanks with live plants, would a sponge filter be a...