The Planted Tank Forum - View Single Post - Red sea drop checker
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post #6 of (permalink) Old 02-10-2012, 05:19 AM
Algae Grower
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Join Date: Oct 2011
Location: Portland, Oregon
Posts: 32
It's easy and cheaper than dirt to make... Just use your standard ph testing solution for the indicator once you make the 4dkh solution...
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