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Originally Posted by Byron View Post
I agree, though. Seashells are almost entirely calciferous material and will most certainly raise your pH and hardness.
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Same thing applies to corals, in case it comes up.
Total years fish keeping experience: 7 months, can't start counting in years for a while yet.
The shotgun approach to a planted tank with an LED fixture
Small scale nitrogen cycle with a jar, water and fish food; no substrate, filter etc
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We hear of these concerns and I don't mean to make light of them but I have to wonder to what extent shells dissolve in FW to change the pH. It would make sense if shells were ground into a powder and added to the water, but as hard shells I wouldn't think they could do much to the pH.
Father Knows Best but Abbey knows everything! I once knew everything, then I asked one question.
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