Hagen AquaClear 50 Nylon Bag, 2-Pack

Bought these to hold Seachem Matrix for use with my AquaClear 50. Requires the bag to be tied shut and does not have a draw string closure like some other media bags.

If you own or thinking about owning a Aquaclear filter get these, they will save you money. I use this size media bag on both my Aquaclear filers (20 & 50) and they work great. The mesh is the perfect size for containing my media Marineland Activated Carbon Diamond Blend 54 ozif you want or need to customize your filter media, this is the way to go

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Not good for purigen. The small beads slip through. I didn't like the bag even if it worked for Purigen, they just feel cheap and the string is just attached, not threaded through the neck so you can't cinch it tight and tie it. They might as well have just included a loose piece of string for you to tie it with.

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I had bought 1 of these at a local store, it was their last pkg, and I couldn't find them anywhere else, except here on Amazon. Where I live, we have very soft water, very low ph & I needed something to hold some crushed coral sand substrait together in my 4 gallon cube's power filter, so that when water flows threw it, it buffers the ph natrually with out having to add chemicals. I had used the 2 bags I had purshased from a store in my 55 gallon aquairium in this way & it worked great, I just needed to do the same with the cube. Much cheaper than the powdered additives ( I went that rout in the past & way to extreemly expensive fast!!!). Oh by the way, both of my aquariums are freshwater. Thank you!

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The bag is very fine and has the capacity to hold very small filter media. I use it for activated carbon and will use the second for Seachem Matrix. I think this bag is effective.