The Planted Tank Forum - View Single Post - CO2 needle valve question
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Old 01-08-2013, 12:46 AM   #4
Darkblade48
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I agree; the needle valves that you can obtain from the local hardware store are not suited for our needs in the aquarium. They are unable to provide enough control to provide the low flow rate that we require.
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A Primer to Pressurized CO2 and A Primer to Planted Tanks
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