Great for sumps, the 200 micron sock is a low cost alternative to many of the higher priced aquarium 200 - 400 micron socks out there for fish rooms and such. Sump socks sale
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We are a Dealer/Reseller of the Transworld Aquatics Line of JBJ Products. For warranty information please contact us and we will fwd you to the correct place. Most of their products carry at least a 1 year warranty.