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#1
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substrate
ok im sure you've all seen this topic before , but my question to you is about oyster shells...alot of people use it in their DIY rock and so i was wondering if it would be ok to use with a mix of sand as a substrate?? anybody using or have any ideas? ive heard it may create a phosphorus problem?
Thanks Craig |
#2
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I use nothing but aragonite.
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Lloyd |
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