A few months ago, I was forced to break down my entire fish room due to illness. I have basically a whole fish room of ATI sponge filters (all parts minus the sponges) for sale. Please see the exact number of all parts below. Everything is under 2 years old, as I had just converted the room to air filtration a bit over a year before having to dismantle everything.

25 Bases

33 Female strainers

31 Male strainers

32 Bullseyes (top part where airline connects)

28 Steps (aka risers)

~20 lift tubes

I originally purchased all this through Jehmco (total price new is around $232 for everything listed) and replacement sponges can be bought here as well as through other distributors. I'll also throw in some extra, non-ATI, sponge filters (parts only, no sponges) since I sadly have no use for them anymore.