Filtration Question

[Beverly]

This is merely an observation, and not to be construed as advice. My nano has a DSB, and therefore there is no need for using the foam in my mini for biological filtration.

I don't use the foam for biological filtration, even though I treat it that way (rinsing in outgoing changewater). I, too, have a deep sandbed and lots of porous rock, but no skimmer. I simply use the foam to catch and export crud from our system, and lots of crud we have every week when I cleanthe foam.

Since out 7 gal is our primary tank, I just go the extra mile to keep it in tip top shape. Everybody uses their tanks in different ways, and each to their own.

Take care.