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<< I heard that you cannot use granular activated carbon (GAC) in planted
I have an Eclipse 3 tank that takes a filter that fits it. It uses GAC as a
media. Should I use filter floss or something like it as a media? It has a
bio-wheel in it. Thanks
Activated carbon adsorbs some of the miro-nutrients your plants are dependent
on. It's not so much that it's verbotten as much as it isn't a real good
idea. I would remove the GAC from your eclipse system and eithr fill the gap
with floss/angelhair or just leave it void. Carbon can be added as needed to
take tannin-tinting or medications out of the water and then removed again.
By the way, most of the angelhair sold dirt cheap in fabric and craft stores
is the same stuff as filter floss, but without the 250% markup on the price.
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