ABE16720 2-Pack Chemi-Bags with Ties for Aquarium

So far, this bag holds the Seachem Purigen just fine. The mesh is much much finer than the smallest bead of Purigen. I have used Seachem's The Bag and Seachem's 100 ml Purigen that has its own bag. Background story: I was not so smart and decided to let the bags roam around in the return pump compartment of the sump and the bags got destroyed when it entered the pump intake. Now I have Purigen flowing around all over my tank and corals. Been a chore to siphon them out.So that is what compelled me to buy another bag and another bottle of Purigen. I came across this and most reviews say it works. I can attest to that. You can see from the photos how fine the mesh really is. You have to look very close to see the little holes in the mesh. And the great thing about this bag is it does not trap air bubbles! You can see i placed it at the top of my filter media section. With the other bags, as the water falls on the bag, air bubbles get trapped and causes the bag to float. Not this one! This ensures all the water passes through the Purigen.However, nothing is perfect. In my opinion, i feel that bag is not "heavy duty". Compared to Seachem's bag, they feel thin, very soft, and brittle. Something like a sharp finger nail can get caught and rip a hole in them. As long as you are careful in handling them, they should last a long time. Buy some spares in case or even double bag your media. I bought two packs so I have three as back up.

Great bag for all types of media. This will work for purigen, phosban, and maybe even GFO. I have been able to get several months use out of a single bag. They are not the most industrial but if you are careful they will work great. If you stick it too close to your return pump, you might have issues. This is similar to “the bag” sold by seachem. I love seachem products except for the price. For the money I believe this is a better value. Good luck and happy reefing.

I have a small reef aquarium, and I need to be able to portion out chemi-pure media. The media is really small, so you need to use a bag that not only can contain the particles, but also can allow adequate flow through the material. These are good bags, and they seem to be pretty durable, so you shouldn't have to worry about your chemical media leaking out. The only reason why I didn't give them five stars is because the price is a tad high for mesh bags, but the price is definitely not awful, either. I will be ordering these again.

Bags are very good, I use them for Seachem Purigen and they work just fine, good bags that can be used for all types filter media.::: Update:- I thought these were good for Purigen, but the purigen does leak out, not much and is minimal, but it does leak out, very visible when rejuvenating in bleach and water in black bucket, also have black sand and can see particles sometimes(they are very small), hard to find other bags that will work other than Seachems: THE BAG, am using those now and there is no leakage. If you don't mind very minimal leakage, chemi-pure bags are great, otherwise go with Seachems

I bought these because reviews said it was great for purigen and because of the price. I have 4 tanks that need 1 bag of purigen and 1 tank that needs 4, so at $5 for 2 bags compared to The Bag, what deal, right?I think for the larger tank that needs 4 bags (it's a 400 gallon filter), I'll find a different bag or just shell out the money for The Bag. Sadly, the zip ties are just that, zip ties (someone said they're reusable, I guess if you want to sit there and fight with it for a few hours...). While The Bag has reuseable/releasable zip ties. Why such a dealbreaker? When the purigen needs to be recharged, it sits in bleach. I don't need the bags to be weakened or eaten away, waste of money.The purigen does come out of the bag, if enough force/pressure is used. Maybe not enough to worry some, but with my larger filter, call me paranoid. The mesh is fine, but not that fine.Also, I did receive one bag with both ends open, not horrible just a bummer.All in all, great for my smaller canister filters, power filters, and fluval spec.

These work great, I put in 1/4 cup of Purigen and twisted the bag and ran the bag back over it, effectively doubling it, then used the provided zip tie to close it off, worked like a charm. I didn't want to cut the bag. I will be able to empty the bag and refill in the future, just need to buy a bunch of the tiny zip ties to prepare for that down the road, I'm impressed that NO purigen came out.

These are perfect for Purigen! $4.95 for a two pack (at the time of my purchase) when Seachem's The Bag is $10.51 each. Good size to go in the filters I'm dealing with (10 gallons up to a 55 gallon Decorative ReptoFilter) and hold a very very large amount of Purigen, more than you'll even need to put in your tank so don't worry about these being too small. I haven't had any problems with Purigen escaping from the bag, the mesh is extremely fine. They come with little cable ties which seal tightly but can be opened again without cutting the tie or the bag if you need to. I use these for Seachem Matrix as well, and I'm sure they'd be ideal for any other filter media. Perfect.

Bag was great for first 2 uses and holding Purigen, but after 2 uses bag was destroyed when recharged third time. Guessing it is the 50% bleach solution with water. Actually fell apart when in Prime solution 4 tablespoons with water. Won't be buying again. Bags are extremely small.