Another question. How often do these need to be rinsed and or changed.
More info. Its a 300g with 2 large cichla. Feed once a day. In about 5-6 months. I'll be adding 3 maybe.more cichla and ill cut back to feeding once every other day.
Much thanks fellas.
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I rinse mine out once a month or so...BUT only use water from your fish tank or you will KILL the good Bactria on them... Then it's like starting all over again..