Quote Originally Posted by CatLABS View Post
Actually, the Jobo caps have a push in section, which is designed to allow for expansion inside the tank. You push it in at the beginning of the cycle.
Even brand new caps might be leaky and might need replacing... but if you found something that works (IE paterson), none of this really matters.
Yeah I tried to releases much air as possible before I started however for some reason the Job is just never seem to do it they always bubble and let air out and let chemical out but the Patterson seem to be sealed tight tight. Assuming that you put it on correctly

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