Marineland fish aquarium Power Filter $11.64 shipped after $5 MIR

10 years, african cichlids, one 125g frontosa tank going for 3 years,in that tank have had two generations of fry grown up and sold (32), no chemical filtration, stopped using dechlorinator,just 10 percent water changes, vacum gravel, clean my filter that I made from a large power head wrapped in pond filter medium.

Yes I agree with double filtration.

Certain African cichlids, notably those from Lake Tanganyika and more specifically, Tropheus species, definitely do not appreciate large scale water changes (10-20 percent is about right) but the less you change, the more frequently you need to change it.

Africans are particularly sensitive to dissolved metabolites in the water. the rest of the Africans both from malawi and Tanganyika will appreciate weekly water changes of about 50 percent. if nitrates are 10 ppm or less, you're doing fine.

A simple nitrate testing using api drop solution test should dictate how your doing with water quality.

Of course how much you stock and how much you feed will determine what amount of water change is necessary.

I keep fancy gold fish that eat and poop all day. I feed 6 times a day over 14 hour period since they are under a year old and in the prime growth stage much like a 6 month old baby. So I water change 50% twice a week or 80% once a week.
I can tell they prefer the twice.

how you guy think the 350 gph it cost only $29.99,I think this better 1