If you think one is noisy try 3 in each pot, very loud but def. worth the sleepless nights! I would sleep with a red hot poker up my a**e to get these kinda results!!!!!
but the air pump is inside the bubbler.
it has 4 rubber suckers tolstick 2 bottom of pot.
i have wrapped sme ins round 1 of them ill try that .
where would the sponge go?
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