My Aqua Medic reg is fixed at 1.5 bar and then you adjust with the needle valve for bubble count or are you asking for bubble rate?
You could start with effluent rate of about 25cc min and adjust bubble count until PH is in 6.6 - 6.8 range.
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Brian
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220g inwall 48"x36"x30"
110g mangrove refug/sump
Poison Dart Frog Vivarium
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