Helping my sister set-up a 5.5g for live plants (emersed pothos, submersed marimo moss and Java fern) and one of the betta girls that somehow came home with me the other day. 
I picked up a Red Sea Nano filter and am looking for ways to utilize filtration media we already have. Options are AC ceramic rings, polyester batting, yellow grouting sponge from Home Depot, gray weatherproofing foam from HD. And, of course, the dinky sponge and charcoal packet that came with the filter.
I know people around here use the yellow HD sponge, but I’m not sure about the gray foam. It’s open-cell but the pores are pretty teeny. Anybody here ever tried it in a tank? How well did it work?
If she combines media, how should things be positioned inside the media compartment?
FYI, yes, she'll cycle the tank before betta goes home with her.
I picked up a Red Sea Nano filter and am looking for ways to utilize filtration media we already have. Options are AC ceramic rings, polyester batting, yellow grouting sponge from Home Depot, gray weatherproofing foam from HD. And, of course, the dinky sponge and charcoal packet that came with the filter.
I know people around here use the yellow HD sponge, but I’m not sure about the gray foam. It’s open-cell but the pores are pretty teeny. Anybody here ever tried it in a tank? How well did it work?
If she combines media, how should things be positioned inside the media compartment?
FYI, yes, she'll cycle the tank before betta goes home with her.