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Discussion Starter · #1 · (Edited)
Since shrimp are sensitive to nitrates, and Purigen brags about absorbing it (and ammonia and nitrite), I'm curious if a bag can be dropped into a shrimp tank? It would only have a sponge filter so no area in water movement to place it (like in HOB and canisters).
Has anyone tried using the product in such a setup? Did it help? Or is it just a waste of $?
 

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It says it needs to be in a place to get maximum flow. Not sure if soaking it will do much good though. It works wonders in my canister, highly recommended.

This is correct. If there's no water flow through the Purigen particles, it can't and won't absorb the impurities it's meant to deal with.
Gotta have it a filter, or a reactor of some sort.
 

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If there is a sponge filter there has got to be flow. Yes the air bubbles up, but water is drawn with it. Perhaps you could attach another pipe containing the purigen to the top of the sponge tube?:confused1: Not sure though. Maybe some more advanced DIYers can chime in. Good luck!
 

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Yes, there's some flow in a sponge filter - but it would very likely be insufficient to permit a proper flow-through job, as well as not providing the necessary coverage of the overall Purigen bag/container.
 

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Since shrimp are sensitive to nitrates, and Purigen brags about absorbing it (and ammonia and nitrite), I'm curious if a bag can be dropped into a shrimp tank? It would only have a sponge filter so no area in water movement to place it (like in HOB and canisters).
Has anyone tried using the product in such a setup? Did it help? Or is it just a waste of $?
I use it in all my tanks, shrimp, discus and more. It does amazing things. It has never changed the parameters and if you follow the directions on regent you will be fine. Awesome stuff

-Chris
 

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Since shrimp are sensitive to nitrates, and Purigen brags about absorbing it (and ammonia and nitrite), I'm curious if a bag can be dropped into a shrimp tank? It would only have a sponge filter so no area in water movement to place it (like in HOB and canisters).
Has anyone tried using the product in such a setup? Did it help? Or is it just a waste of $?
Try using seachem matrix head it's 10x better than purigen. Purigen needs to be replaced every so often not too sure when but so heard that it needs to be replaced. As far matrix doesn't. Great bio media killing nitrites and ammo
 

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If the Purigen isn't in the middle of the main flow -- like in an HOB -- as others have suggested, it's not going to be as effective. But will clearly still work a bit.

If an HOB isn't an option but you've got the budget for it, one could always buy an external reactor or build your own. That is, if the tank is large enough. There are some on the market for under $50 these days (primarily for use in reef tanks). Also a couple tutorials here on the forum for making your own if you search for them. I think one design is one Liam came up with some time ago.
 

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The question here isn't really about whether or not to use the product, but more about how to
Use it when you only use sponge filters.
I missed that. Well then I would put the somewhat shocked said in main current flow. I put my old one in a filter bag and tie it to my spray bar or over my sponge filter.
 

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Discussion Starter · #16 · (Edited)
Thank you everyone for your thoughts,suggestions, etc. I am setting up a 2-3g bowl and 2 g jar, odd shaped and not conducive for HOB, too tiny for canisters (I think a bit overkill for that small.. and pricy) They are curved/rounded and thus awkward.. so sponge filtration is my only option really (not enough room for tiny pumps and diy 'hob' style at least not anything I've thought/looked up).

edit:You can read my first post either way, ultimately I'm asking if its effective in such minimal/no flow environment.
Seeing Julianzh's photo of it simply floating ad changing color(absorbing), is good encouragement (thank you). I might try it, perhaps just put it in at night when I'm not looking at the tanks (floated) or make a little diy attachment to the sponge filter tubing that I can stuff some in and have running constantly.
 
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