It's pretty heavy duty, i'm sure it would ozone safe though since it's such a thick plastic and ceramic. It's not real fine though. We use them in our fish holding system and bubbles are pretty good size, but not huge.
I modded and old skimmer, I am feeding it with a sedra n/w from you. but when i use N/w to pull air thru rdsea OZ unit, the bubbles drop drastically because of air flow loss.. So I ordered some limewood airstones.. put them in... Added bubbles work great, In fact I am surprized many more people don't use very fine airstones in skimmers ANYWAY--- I want to push air with airpump- thru OZ unit -into an airstone in skimmer.
I have seen them at aquatic-ecosystems.. Was just hoping to get them from you.. Since I use you 99.9%
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