Do you measure your CO2
level? It's a simple calculation between your pH and kH
to determine what ppm
level your CO2
is. If you're achieving a good level, then I wouldn't worry about it.
Another option is to get a glass diffuser, but people have had mixed results with these and DIY setups.
A diffuser ladder is another choice, but they're bulky and an eyesore IMO
, but they do work well to get better diffusion.
It's difficult to get to 100% diffusion, and it's also not fully necessary if you're obtaining good levels of CO2
. It may be that you're doing ok already.