also, your 304 must filter about what...60-70 gals. you should aim for 3times to total volume you have. there is a measure (i think its how many gallons per minute but i maybe wrong) on every boxes of filters.
you will soon see that piranhas are very poluting fish. therefore, you need very good filtration.
you will soon see that piranhas are very poluting fish. therefore, you need very good filtration.
