The Planted Tank Forum - View Single Post - DIY CO2, bubbles not forming in bottle
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post #18 of (permalink) Old 12-27-2012, 06:44 PM
Algae Grower
Join Date: Apr 2012
Location: west orange, NJ
Posts: 12
This is what I do and it works perfect every time.

Put some duct tape around the top of the bottle cap making something like a bowl. Fill it with gorilla glue and let it dry (with your tube through the cap of course). The best bottles for me are Gatorade. I've had issues with soda bottle caps leaking air out of the sides. Gatorade seems to make a solid seal.
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