Filter sponge is a perfect dirt cleaning tool for a fish tank. It traps waste inside to keep the tank clean. Know how it works.
A filter sponge is a source for mechanical filtration – this is where the filter separates and removes solids and waste. And after developing grown bacteria colonies, it also offers biological filtration – the good bacteria to remove contamination and purify water. Although they have often been seen as the best filter for using at the beginner level, it isn’t the case as many pros are there to use them.