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Hello:
I am making live rock
I have bags of crushed coral and also a bag of crushed Oyster shell.
Would you take me apart of appearance what the differences are. What is the higher phosphate content of crushed oyster shell. What could be the source of the phosphrous in crushed oyster shell?
I went to Home Depot and Lowes, they sell Portand cement type II-V, not type I-II, can I use type II-V? What is the difference?
Thanks so much
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