BTA Nylon Filter Bags

Filter Media Bags BTA Nylon Filter Bags Heavy-duty nylon media bags, double-stitched and built to hold fine resins and small filter medias - GFO, carbon, granular medias down to 0.5 mm - securely in your sump, reactor or filter housing. Every bag seals with a drawstring, and every bag ships with a free bag clip for a second line of security. 45-175micron ratings 5bag sizes 100%plastic · aquarium safe +1free bag clip included Drawstring seal Every bag ships with a free bag clip - a second seal, on the house. Double-stitched nylon ✓ 100% plastic ✓ Totally aquarium safe ✓ Double-stitched seams ✓ Heavy-duty nylon ✓ Free bag clip ✓ Affordable These are media bags first and foremost - built to hold filter media, not to be the filter themselves. Fine resins, granular medias and small-partical medias like our FERRIX-03 GFO or our CARBOX 830 (which runs down to a 0.5 mm particle) all sit perfectly in these bags, as does just about any other filtration media you care to run. You can use them for pre-filtration if you like - but holding media is the primary job, which is exactly why every bag includes a drawstring and a free bag clip. Why media bags The difference 😬 Double-stitched, heavy duty Every seam is double-stitched in heavy-duty nylon. These bags take a full load of media without splitting, and they clean up ready for the next refill. 🔒 Drawstring - the secure seal Zippers get gunk caught in the teeth. Velcro clogs and loses its grip. A drawstring pulls tight around the media and stays tight - the most secure closure for the job. 🧴 Free bag clip - second seal Drawstrings hold tight, but getting them undone can be a fight. Each bag includes a free bag clip as a secondary seal - use it if you want it, skip it if you don't. It's on the house either way. At a glance Built tough, priced fair Heavy-duty nylon mesh Double-stitched seams Drawstring closure Free bag clip included Holds fine resins & small medias 100% plastic Totally aquarium safe 5 micron ratings · 5 sizes Affordable Pick your weave Five micron ratings from a fine 45 µm weave up to a free-flowing 175 µm. Finer weaves hold the smallest resins and medias; coarser weaves keep flow high around bulk media. Pick your size Five bag dimensions from a compact 20 × 15 cm bag up to a 45 × 60 cm sump workhorse. Match the bag to your media volume, reactor or filter housing. Nothing but plastic 100% plastic construction - no metal parts to rust or leach. Totally aquarium safe in fresh and salt water alike. Sealing the bag How to use the clip The fold-and-clip method Fill the bag with your media of choice. Fold the top of the bag over so you have a folded section that is not as wide as the clip. Clip the bag clip over the folded section to lock the media in. Our favourite: fold the corners in on the top of the bag, clip over the top, then fold it down. But honestly - do it any way you like. Drawstring or clip - your call The drawstring is the primary seal and the most secure closure for media. The clip is the free secondary seal for extra peace of mind. Use one, use both, or use neither - the bag works either way. Pre-filtration? Optional These bags will happily pull detritus and fines out of a flow as a pre-filter if that suits your setup - but holding media is what they're built for. Sizes & ratings Find your fit Micron rating × bag dimensions - all 25 combinations available Micron rating Bag size Dimensions (W × H) 45 µm Small 20 cm × 15 cm 45 µm Medium 20 cm × 30 cm 45 µm Large 24 cm × 36 cm 45 µm X-Large 30 cm × 45 cm 45 µm XXL 45 cm × 60 cm 75 µm Small 20 cm × 15 cm 75 µm Medium 20 cm × 30 cm 75 µm Large 24 cm × 36 cm 75 µm X-Large 30 cm × 45 cm 75 µm XXL 45 cm × 60 cm 125 µm Small 20 cm × 15 cm 125 µm Medium 20 cm × 30 cm 125 µm Large 24 cm × 36 cm 125 µm X-Large 30 cm × 45 cm 125 µm XXL 45 cm × 60 cm 150 µm Small 20 cm × 15 cm 150 µm Medium 20 cm × 30 cm 150 µm Large 24 cm × 36 cm 150 µm X-Large 30 cm × 45 cm 150 µm XXL 45 cm × 60 cm 175 µm Small 20 cm × 15 cm 175 µm Medium 20 cm × 30 cm 175 µm Large 24 cm × 36 cm 175 µm X-Large 30 cm × 45 cm 175 µm XXL 45 cm × 60 cm Media to fill them Pair with media FERRIX-03 GFO High-capacity granular ferric hydroxide for phosphate control. Granular, small-partical media - sits perfectly in these bags. Shop FERRIX-03 GFO CARBOX 830 Granular activated carbon that runs down to a 0.5 mm particle. One of the finest medias you can bag - and these bags hold it without issue. Shop CARBOX 830 What you get What's included 1 × Nylon filter bag Double-stitched heavy-duty nylon media bag in your chosen micron rating and size, with drawstring closure. 1 × Drawstring The primary seal. Pull it tight and your media stays put - the most secure closure for filter media. 1 × Bag clip - free A secondary seal, included free of charge. Use it for extra security on the media, or leave it off - your call. Questions Asked often Are these filter bags or media bags? Media bags first. They're built to hold filter media - fine resins, GFO, carbon and other small medias - in your sump, reactor or filter housing. You can use them for pre-filtration if you like, but holding media is the primary job. Why a drawstring instead of a zipper or velcro? Zippers get gunk caught in the teeth and jam. Velcro clogs up and lets go. A drawstring offers the most security for the media - it pulls tight, stays tight, and nothing gets stuck in it. What's the bag clip for? Getting a drawstring undone can sometimes be a little tricky, so every bag ships with a bag clip as a secondary seal - free of charge. Fold the top over so the folded section is narrower than the clip, then clip it over. Or fold the corners in, clip, and fold. Do it any way you like - or don't use it at all. Totally optional. Which micron rating should I pick? Finer weaves (45-75 µm) hold the smallest resins and medias. Coarser weaves (150-175 µm) keep flow high around bulk media. 125 µm is a solid all-rounder. If you're not sure, contact us for sizing - it's free. Are they aquarium safe? Yes - 100% plastic construction, totally aquarium safe. No metal parts to rust or leach into fresh or salt water. Can I reuse them? Yes. The heavy-duty nylon and double-stitched seams stand up to rinsing and repeated cleaning cycles, so a bag keeps working load after load. Not sure which bag? Micron rating, bag size, media fit - if you're not sure, reach out and we'll sort it with you. Sizing help is free. Contact us for sizing Wholesale & trade Stocking BTA nylon filter bags in your store? Trade pricing and bulk packs are available - get in touch and we'll set you up. Open a trade account