The Planted Tank Forum - View Single Post - Two 45Ps build: 4 hr photoperiod aka I hate Aquasky
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Old 03-03-2013, 09:00 PM   #23
Jason K
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It's an in-line probe holder, has a temp probe, ph probe, a union valve, and a ball valve. The little doaqua cube (which i had lying around) is to catch possible leaks and spills during maintenance.
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