11-12-2009, 08:26 PM
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Originally Posted by Angel079
By no substrate I meant that fancy special stuff you can buy for under the gravel for plants, I ain't got that, just plan ole gravel.
I re-checked 2x before posting, tap & tank water lol reading is correct
Following advice from 1077 elsewhere, run some tap water and let it sit overnight and then test the hardness and pH after maybe 12 hours or so. I know that pH can be different, but haven't heard about hardness. And can you test GH and KH?
KH is carbonate hardness and that cannot increase unless calcareous substances are added to the water from something. The wood has the opposite effect, it leeches tannins that acidify and lower pH and hardness, though marginally.
And yes, I am certain it is not permanent--unless there is something in the tank causing it. Let us know the readings after 12 hours.