ooooooooohh, ok, now I see what you mean....figure out a way to rig a carbon pocket in the cylinder on top. GOTCHA!!! I was confused w/ that one.Yep standard sponge filter. As I said in the pm a lot of people do not like to use carbon. But its possible to make litle carbon cartridges to drop in the up tube.
I personaly love sponge filters they have great bio filtration and polish the living heck out of your water made the tanks I added them to crystal clear. and if your water changes are regular carbon is kind of a back up plan anyway.
For what it's worth, a local aqaurium store owned and run by the same guy for over 30yrs now has always kept his water temps at 19deg or 66F in the winter months without any troubles. He has both fresh & salt water fish of all varietys. He runs the lower temps in an effort to keep his electricity bill in check & advised me to do the same but I dont bother so much especially if I'm try to get my fish to grow as that is the only downside of lower temps.Anyone raise an Oscar at 70F? I know most people would say 72F for tropical, but does the 2F really make a huge difference?
Obviously CAs would be ok and I have/had several species that do perfectly fine well into the mid-to-low 60's, but I'm curious about how an Oscar would do.
The only SA I think I've tried it with are "Geophagus" brasiliensis which did great all Spring and fed like normal, but could this have to do with their Ocean-going ability?
19C??For what it's worth, a local aqaurium store owned and run by the same guy for over 30yrs now has always kept his water temps at 19deg or 66F in the winter months without any troubles. He has both fresh & salt water fish of all varietys. He runs the lower temps in an effort to keep his electricity bill in check & advised me to do the same but I dont bother so much especially if I'm try to get my fish to grow as that is the only downside of lower temps.
Lol. Yes, 19 degrees Celsius. I have kept a tank full of Malawis at 19deg without I'll affect. The only downside is they are less active but they eat less & water quality is better as a result.19C??