Diatom Filter

dieselndix

Member
So a friend of mine has a diatom filter from his last FOWLR tank, and asked if I wanted it.
I know nothing about them, and if they are beneficial to a reef setup.
I have a 55g with 260W PC 65LBS LR 20G sump 13G fuge
do I want this thing? and what does it do
thanks
 
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