The Planted Tank Forum - View Single Post - Substrate and root tabs question
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Old 12-23-2012, 06:44 PM   #5
Planted Tank Obsessed
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You should pay attention to the mineral analysis of the root tabs you buy.

Some are just trace nutrients, some are just major nutrients.

Also, if you are going with just plain gravel or sand with 0 CEC, then I'd want to go with a slow release root tab instead of a fast dissolving tab.
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