feldspar - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 3 Old 04-02-2010, 05:46 PM Thread Starter
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is Feldspar a safe rock for use in fishtanks?
dutoits is offline  
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post #2 of 3 Old 04-02-2010, 08:11 PM
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I've used it before, however i cleaned it throughly and ran the tank with it and checked the levels frequently before I added fish.

So setup a small tank if you can and run it in there after you wash it good, use some vinegar etc to clean it wash it really good with water... then test it if you can.
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post #3 of 3 Old 04-03-2010, 03:51 AM
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Some feldspar does contain calcium, so I would test it first to see if it will raise your hardness and pH. You could leave it in a bucket of water for a while, periodically testing pH and hardness, to see if it'll affect your aquarium water.

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