i was browsing i web site that is sponsored from this website, the ads you see at the top, called Aquarium supply store, (
http://www.aquatic-store.com/) and they sell this "co2 tubing" instead of regular air tubing saying
"CO2-Proof Tubing -
Normal airline tubing can lose up to 20% of CO2 through its membrane. Silicone tubing reacts w/ CO2 and render it less efficient (thus the silicone hardening over time under CO2 usage). Our special CO2 Resistant Tubing loses less than 1% of CO2."\
what do you guys think about this, i mean 20% is a significant number but
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