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post #8 of (permalink) Old 07-25-2013, 01:58 AM
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Originally Posted by TorontoPlantMan View Post
It says the sand is 0.55-0.65mm sand, do you know which size you have?

Does the size of the sand matter? Do you think 0.55-0.65mm sand is fine enough?
#30 grain sand is about 0.6mm, so the bag is #30 grain.

I have pool filter sand in two tanks and it is #25 grain. #30 is smaller, but still big enough that it shouldn't get sucked int a filter. Only one of the tanks is planted, and it's a low tech tank that is all sand, so I can't comment on using it as a capping material.
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