04-06-2005, 04:45 PM
Join Date: Apr 2004
iTrader Positive Rating: 100%
Leave the sponge out permanetly, I do and the gas does not escape. The tube is long enough. When you say you measure the co2 at 20ppm, your reading that off of your regulator? The only way to know how many ppm's of co2 you have in your water is to calculate your kh and ph. At least that's the only way I know.
The only time I have excess gas in my tube is when my power head is clogged or has some bubbles trapped in it. You should remove it and take the empellor out and do a good cleaning.