The Planted Tank Forum - View Single Post - Need help with rock selection
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post #3 of (permalink) Old 03-05-2011, 04:33 AM
Planted Tank Guru
Join Date: Jan 2010
Location: Contra Costa CA
Posts: 11,721
Get some of the littlest pieces of whatever you like. The broken off bits.
Test those bits in glasses of the water you use in the tank. Tap? RO? Do you add peat moss?
Test GH, KH, pH, TDS for a week or two.
If any rocks make changes you do not want in the tank, then do not use that one.
I have some that your store calls 'Imagination'. Red lava in weird shapes. They make interesting caves.
Diana is offline  
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