Is anyone familiar with this product?
http://www.ebay.com/itm/BULK-ACTIVA...ultDomain_0&hash=item2320a62e49#ht_1053wt_920
I wonder how it would work for aquarium filtration. I think I read somewhere that cocount shell can soften the water a bit as well.
http://www.ebay.com/itm/BULK-ACTIVA...ultDomain_0&hash=item2320a62e49#ht_1053wt_920
I wonder how it would work for aquarium filtration. I think I read somewhere that cocount shell can soften the water a bit as well.