The Planted Tank Forum - View Single Post - Simple DIY Drop Checker (V2 is Alive! 3/31)
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Old 04-11-2011, 06:29 AM   #48
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The Chinese glass one works great for me. It changes about 4X faster than a DIY one I made..small amount of liquid, and volume, and a decent surface area-comparably. The small diameter at the top doesn't have an effect on the equilibrium speed. It's all about surface areas to liquid volume in the checker.

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