The Planted Tank Forum - View Single Post - Is this iron deficiency?
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Old 11-17-2012, 08:05 AM   #14
Darkblade48
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Quote:
Originally Posted by Richardblack View Post
I use JBL DC, it stays the same green regardless of how much co2 I use
When you first add the solution to the drop checker, it should be blue.

Are you using a 4 dkH reference solution?
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