So here is my question: Does anyone know of a good or common place to get a
blow valve? (I.e. a valve that will discharge within a certain PSI range) I
would like to make my DIY system fault tolerant, but I am just stumped on
where to get the blow valve... any ideas? Thanks!

The pressure will not be able to build up since it will go out the
airstone. Would'nt be to concerned.

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