I gave up on DIY yeast CO2 after screwing with the airstone that the CO2 was coming out of for about 30 minutes, trying to get it positioned just right so that the bubbles would be sucked up into my filter intake. That just frustrated me to no end and got me looking for easier options. I mean, there are all kinds of other hassles with DIY yeast CO2, but that was the straw that broke the camel's back for me. LOL.
Fightin' Texas Aggie Class of 2004
37 gallon AGA Black Seal, Emperor 400, Ebo Jager 200 W, 100% Flourite Substrate, 2x55 Watt AH Supply PC Lighting (5300K & 6400K) @ ~3.4 WPG, High-Pressure CO2.