Is it possible to get good co2 levels with an aquaclear filter? My tank is 33 gallons and I`ll soon be hooking up my co2. I really don`t want to invest in a canister filter if I don`t have to. I`m aiming for 30ppm.
Thanks
Yes it is possible, but highly unefficient compared to conventional methods. to help, make sure that your water lvl is high enough as to reduce turbulence.
Also, you can easily do an internal reactor such as a vortex co2 rector to make life easier on you. I used the mini one on my 29g and easily got the lvls I needed.
I was looking at those reactors (like the one on Tom Barr`s site right?) I see lots of people have a sponge filter added at the end.
In theory, that sponge would be able to hold lots of bacteria. Enough that it would be able to serve as the filter for a tank? I run nothing but sponge in my aquaclear anyway so I wouldn`t be losing any mechanical filtration.
Some folks use sponge material or blue bonded filter material and mount it on the exhaust side of an AC and let it hang slightly in the water to reduce turbulance. I've seen a lot of tanks pearling using this method.
co2 and HOB filter 
Linear Mode
