Biological filtration questions

[enjoyable_attempt];2164435; said:

What can I do, or add to improve my biological filtration, I'm thinking of making a sump mainly for it, but if there is a easier way I would like to take that route.

Throw me some ideas, and what you think


(On a side note, I have the fluval fx5 with its basic 3 stage media on a 225 gallon tank.)


My personal view is that a single FX5 provides a somewhat insufficient capacity for biological media with the tank size you describe, assuming a robust population of fish. However, to squeeze out as much biological activity as you can from that single FX5, I would eliminate all pads and chemical media from the three media baskets and fill each chamber with Ehfisubstrat Pro.

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QueueBa11;2207891; said:

Sponge filters work if you don't mind the clutter in your tank.

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unstopable4700;2208450; said:

that sounds like it will turn into a nitrate pump unless cleaned constantly. which will do no good for BB. unless you run a foam prefiler on the inlet.

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unstopable4700;2208477; said:

right but what i am sayin is removing the mechanical filtration will cause the bio filtration to become poo logged.

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