Originally Posted by BettaBetta
What is the difference between a sponge filter and other kinds? And what is biofilm?
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Sponge filter is in tank and all debris and waste gut stuck in it and the water is cycled through, it is cheep and quiet. Other filters on the other hand suck water into a tub where the water is passed through different filters that over time create a biofilter which is a bunch of helpful bacteria that breakdown waste. Biofilm is micro algae and bacteria that grows and colonizes on plant leaves and other things and the shrimp love to eat it
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