Originally Posted By: Bill Cody
Cleaning the ceramic air stones instead of an acid dip actually requires a soaking in the acid (muratic) because the growth and minerals become deposited down into the pores of the diffuser stone.


Bill, that's what I do with the air stones in the holding tanks that use air. My diffusers that are used with straight O2 don't get dirty - they aren't in the water unless they have O2 going thru them.

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