GH increased without GH booster - The Planted Tank Forum
 
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post #1 of 3 (permalink) Old 12-22-2012, 04:03 AM Thread Starter
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GH increased without GH booster

OK so I have been using RO/DI water for the last few months on my two tanks: 36 gallon tropical and 26 gallon goldfish. I was keeping the GH at around 3-4. I went on vacation for two weeks so it had been just short of 3 weeks since the last water change. I found the GH in both tanks was about 10. Nothing was added except fish food.

Can the GH increase almost 3-times just from fish food and fish waste?
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post #2 of 3 (permalink) Old 12-22-2012, 08:14 AM
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The GH will not increase due to fish waste/fish food.

I would suspect your substrate/hardscape that is leeching minerals that is contributing to the increase in GH.

Anthony


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post #3 of 3 (permalink) Old 12-22-2012, 05:22 PM Thread Starter
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I have red Florite substrate and a couple pieces of drift wood in each tank. Is Florite known to leech Mg and Ca into the water?
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