If you’re looking for crystal clear water, the Red Sea 225 Micron Thin Mesh bag is a great addition to your sump filtration system, trapping ultra fine debris from your fish tank.

Here’s what Red Sea say about their range of Post Filter Bags:

A range of 3 high quality, reusable aquarium filter bags providing different levels of mechanical filtration. These 10.5″/26cm long filter bags for Red Sea’s REEFER and MAX-S aquariums will also fit any standard 4″/10cm filter bag holder.

Red Sea’s 100 & 225 micron aquarium Felt filter bags

Available in 2 porosities, the felt filter bags are very effective at trapping particulate matter in the thick wall of the bag.

Red Sea 100 micron Aquarium felt filter bags

100 micron felt filter bags are designed to provide fine ‘polishing’ of water that is already low in particulate matter (mature aquariums).

Red Sea 225 micron Aquarium felt filter bags

225 micron felt filter bags are ideal for regular day to day use and enable a longer period between cleaning than with the 100 micron bags.

Red Sea’s 225 micron Thin-Mesh aquarium filter bags

225 micron thin-mesh aquarium filter bags are perfect for new setups and after heavy maintenance or whenever there is a lot of particulate matter in the water. They are also suitable as a holder for other mechanical or chemical filter media. The monofilament construction of these bags makes them very easy to clean. These bags are now used in REEFER™ and MAX-S™ Systems.

One thing is for sure, Red Sea do know what they’re doing when it comes to marine fish keeping, which is why we stock the full range on our shelves – including the Reefers all boxed and ready to go – so if you’re looking for a Filter Sock for your sump filtration system – you’ve probably just found what you’re looking for.