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what is the best to use? the tabs that you burry in the substrate or the liquid stuff you just put in the aquarium? should i use both?
 

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FWIW, I don't like to use tabs because I tend to forget where I've buried some then when you uproot/replant there's issues with how much is released into the water column. Some plants may need them, but they're not the ones I'm growing.
 

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I use both... Most plants take nutrients from the water column so the liquid ferts work for these plants. If you have plants like Swords & Crypts you will want to use root tabs, these plants feed heavily from their roots.
 

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Do crypts and swords feed heavily from the roots because the water column is insufficient? I was led to believe plants will take nutrients from the water column first as it cuts down on energy loss of having to transfer nutrients through thte plant.
 

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Yeah, Tom reminds us regularly that substrate ferts aren't needed. I agree with him but personally I have had better results using both so I keep doing so. They are worth a try, if anything they will help balance out any eventual deficiencies in your water column fertilization.

Giancarlo
 
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