Originally Posted By food
Platypus have the same size cap as PET soft drink bottles. Drill a hole in a soda bottle cap just a bit smaller than the outside diameter of your latex output tubing. Pull the entire adaptor assembly off the end of the tubing and put the tubing through the hole in the bottle cap.



This, plus, you'll want to drill a tiny hole next to the large one so the air can get out, otherwise you're going to blow the platy up like a balloon with that pump filter.

Platys will blow up to an amazing size and withstand a LOT of pressure.
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