DIY CO2 is dodgy to say the least, ask me, I use it exclusively :-)
There always seems to be a fine film that runs down the tube and it
inevitably will clogg up airstones. Diy Co2 juice on the ceiling is just no
fun I tell you. Better to let the bubbles escape the tube uninhibited into
your filter intake.
--
**So long, and thanks for all the fish!**