06-08-2011, 09:12 PM
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Originally Posted by Rip
so i ordered two of the sponge filters from that site, and got them in the mail today. the ones i got were the Oxygen Plus Biofilter 2, and the Oxygen Plus Biofilter 3.
i want to put the dual sponge filter in my 29 gallon, which i already did, and i want to put the smaller sponge filter in one of my 10 gallons. this is the first time dealing with sponge filters, and i have a few questions on setting it up correctly. so far, i only have 1 air pump. it was Petco brand, and was only like $11.99, and i wanna say it was recommended for either for a 10 or a 13 gallon.
what type/size air pumps should i use for each tank?
and also what position in the tank is ideal for it to be placed?
and water is shooting out of the top part. if i leave it under water, it causes alot of surface agitation. right now i have it set so that it's just barely sticking out of the water. how should the output spout be positioned.
and also that petco air pump is the first i've ever had. is there a way to adjust the air flow?
I have the return just at or above the surface. This creates a bit of surface movement that will not be too much but it helps keep the protein scum from forming. The sponge should be down in the tank, but off the substrate.
If you have two tanks, a sponge in each, one air pump is more economical to run. You will need a valve for the two airlines. Pumps usually output air at max, and with the valves you can adjust each filter. It is the number of airstones/sponge filters that matters, not tank size. The pump you have may be adequate, or you may need a larger one.