{"product_id":"seachem-the-bag","title":"The Bag — 180 Micron Welded Seam Filter Bag | Seachem","description":"\u003cp\u003eThe Seachem The Bag is an innovative, welded-seam filter bag with a superfine 180-micron mesh, designed to hold all types of filter media, including the finest resins like Purigen and CupriSorb. Unlike bags with sewn seams that degrade and leak resins, The Bag uses durable welded seams that resist bleach, caustics, and acids—ideal for filter media regeneration. It has a convenient 13 x 25.5 cm (5\" x 9.5\") size and a resealable plastic tie closure.\u003c\/p\u003e\n\n\u003ch2\u003e Main advantages\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e Welded seams — no degradation from bleach, caustics or acids, unlike stitched seams\u003c\/li\u003e\n\n\u003cli\u003e Superfine 180-micron mesh — retains even the finest resins without leakage\u003c\/li\u003e\n\n\u003cli\u003e Bleach resistant — perfect for regenerating Purigen and other media\u003c\/li\u003e\n\n\u003cli\u003e Resealable plastic fastener closure — secure and easy to use\u003c\/li\u003e\n\n\u003cli\u003e Compatible with all Seachem filter media\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Use in reef and marine aquariums\u003c\/h2\u003e\n\u003cp\u003e The Bag is the benchmark filter bag for fine resins that leak from ordinary sewn-seam bags. Its 180-micron mesh is fine enough to retain Purigen, CupriSorb, HyperSorb, and all synthetic resins while still allowing adequate water flow. Its resistance to bleach and acids makes it indispensable for Purigen regeneration (soaking in a 1:1 bleach:water solution) without damaging the bag. The Bag can safely hold approximately 500 ml of media.\u003c\/p\u003e\n\n\u003ch2\u003e Technical specifications\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e Dimensions: 13 x 25.5 cm (5\" x 9.5\")\u003c\/li\u003e\n\n\u003cli\u003e Mesh size: superfine 180 microns\u003c\/li\u003e\n\n\u003cli\u003e Closure: resealable plastic fastener\u003c\/li\u003e\n\n\u003cli\u003e Material: polyethylene\u003c\/li\u003e\n\n\u003cli\u003e Seams: welded (not sewn)\u003c\/li\u003e\n\n\u003cli\u003e Capacity: approximately 500 ml of media\u003c\/li\u003e\n\n\u003cli\u003e Resistant to: bleach, caustics, acids\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Media compatibility\u003c\/h2\u003e\n\u003cp\u003e The Bag is compatible with all Seachem filter media including: Purigen, CupriSorb, HyperSorb, PhosNet, PhosBond, PhosGuard, Aquavitro Phosfiltrum, MatrixCarbon, SeaGel, Renew, Zeolite, Matrix, de*nitrate and all other media in the range.\u003c\/p\u003e\n\n\u003ch2\u003e Comparison with Seachem Zip Bags\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e The Bag (5\" x 9.5\"): 180-micron superfine mesh, welded seams, plastic closure — ideal for thin resins and all media\u003c\/li\u003e\n\n\u003cli\u003e Zip Bag Small (12.5\" x 5.5\"): 25 Mesh, stitched seams, zipper closure — ideal for PhosNet, PhosBond, MatrixCarbon\u003c\/li\u003e\n\n\u003cli\u003e Zip Bag Medium (12.5\" x 5.5\"): 16 Mesh, stitched seams, zipper closure — ideal for PhosGuard, MatrixCarbon, denitrate\u003c\/li\u003e\n\n\u003cli\u003e Zip Bag Large (19\" x 17\"): 8 Mesh, stitched seams, zipper closure — ideal for Matrix and Pond Matrix\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Manufacturer's precautions\u003c\/h2\u003e\n\u003cul\u003e\n\n\u003cli\u003e Do not overfill or overpack the bag — the media should rest loosely enough to allow water to circulate\u003c\/li\u003e\n\n\u003cli\u003e Excessive filling can force welded seams to separate\u003c\/li\u003e\n\n\u003cli\u003e Maximum safe capacity: approximately 500 ml of media\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\u003ch2\u003e Why choose The Bag from ReefSolution?\u003c\/h2\u003e\n\u003cp\u003e The Bag is the essential accessory for using Seachem Purigen, Seachem CupriSorb, and all fine filter media. Its bleach resistance makes it reusable for years through multiple regeneration cycles. Combine it with Seachem Purigen for organic filtration, Seachem PhosGuard for phosphates, or Seachem MatrixCarbon for activated carbon.\u003c\/p\u003e\n\n\u003ch2\u003e Frequently Asked Questions\u003c\/h2\u003e\n\n\u003ch3\u003e Why use The Bag rather than a regular filter bag?\u003c\/h3\u003e\n\u003cp\u003e Filter bags with sewn seams degrade in bleach and can allow fine resins to leak. The Bag uses bleach-resistant welded seams and a 180-micron mesh that retains even the finest resins, such as Purigen. Essential for regeneration.\u003c\/p\u003e\n\n\u003ch3\u003e How many Purigen tablets can The Bag hold?\u003c\/h3\u003e\n\u003cp\u003e Add approximately 500 ml of media safely. Do not overfill to allow water to circulate around the media and avoid stressing the seams.\u003c\/p\u003e\n\n\u003ch3\u003e Is The Bag reusable after regenerating the Purigen with bleach?\u003c\/h3\u003e\n\u003cp\u003e Yes. The Bag is specifically designed to resist bleach, caustics, and acids. It accompanies the Purigen through multiple regeneration cycles without degradation of the welded seams.\u003c\/p\u003e","brand":"Seachem","offers":[{"title":"Default Title","offer_id":38010084360363,"sku":"000116310000","price":18.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0513\/7108\/1899\/files\/5327548.jpg?v=1773622727","url":"https:\/\/reefsolution.com\/en\/products\/seachem-the-bag","provider":"Aquarium ReefSolution inc.","version":"1.0","type":"link"}