The Planted Tank Forum - View Single Post - Best black cap for dirt tank?
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Old 10-03-2012, 10:25 PM   #9
Monster Fish
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Originally Posted by wetrelief View Post
I do not know anything about black diamond. Do you only use that as a substrate? Does it last as long as a dirt tank? I will look into this. thanks.
You can use just black diamond in your tank. However it is completely inert and you will need to use root tabs. Dirt tanks will have more nutrients in the substrate for a longer period of time than those with just sand and root tabs.
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