Favorite CO2 diffuser or micro bubble air stone
What is everyone's favorite CO2 diffuser or air stone which puts out tiny bubbles the longest before needing to be replaced?
I ask this because I have a DIY C02 in my 55 gallon which works great but I seem to replace the air stone every 3 to 4 weeks and it is a bit of a pain because I keep the air stone under a piece of driftwood in the rear of tank .
Certainly not the end of the world but if I could extend the time as rather not disrupt the fish,etc that would be great.
A longer lasting air stone or a C02 diffuser which last 2 or 3 months would be nice .