The Planted Tank Forum - View Single Post - Two 45Ps build: 4 hr photoperiod aka I hate Aquasky
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post #70 of (permalink) Old 04-07-2013, 09:25 PM Thread Starter
Jason K
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Join Date: Jan 2009
Location: NY, NY
Posts: 179
Tested water parameters again today, one day after WC. Wood tank GH is 6 and KH is 5. That means the ryuoh stones are causing GH to increase by 4-7 degrees with 50% weekly wc, and KH by 3-5 degrees. That's crazy.
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