DIY Purigen Reactor/Regeneration technique.

Joined
20 Dec 2019
Messages
253
Location
South Carolina
I’ve never been happy with the way my Purigen is utilized in my sump, so I decided to look into ways to filter it sufficiently. I came across this thread on TPT and I think it’s a really easy diy reactor that would tumble the Purigen gently enough to get proper turnover so all the little beads get exhausted equally. I’ll probably use a 50-90gph pump so as to not blow the Purigen all over the place in the filter housing. I thought the regeneration technique was pretty ingenious using a magnetic stirrer to hasten the process. Hope this helps anyone on the same page as me or pondering it. 👍🏻

https://www.plantedtank.net/forums/...185670-purigen-reactor-how-sorta-2.html?amp=1
 

Zeus.

Member
Joined
1 Oct 2016
Messages
3,365
Location
Yorkshire,UK
I like Purigen - except for the price, of course.

I really dislike the term "polishing of water" because it's a meaningless phrase invented by someone who didn't really understand what these types of resins actually do. They use it, the water gets clearer but no one know why, so they invent a phrase based on some kind of metaphor, like polishing furniture.

In fact Purigen, like activated carbon has an electrostatic affinity for organic Nitrogen compounds. Have a study of the thread https://www.ukaps.org/forum/threads/can-purigen-strip-down-useful-nutritients.26850/ for more information.
Some of the links may have died, the thread is about 4 years old.

There are also some similarly old threads floating around discussing regenerating the Purigen to save money.

At the end of the day though frequent large water changes does what all these resins do, so I stopped spending money on these.

Cheers,
Clive
 
Joined
20 Dec 2019
Messages
253
Location
South Carolina
Thanks for that. That’s the first negative post I’ve seen about Purigen. I found it’s helpful with tannins and water clarity in addition to water changes.
 

Zeus.

Member
Joined
1 Oct 2016
Messages
3,365
Location
Yorkshire,UK
I always think we have to be careful we we read about products claims, esp when there are cheaper ways to achieve the same goal. When someone recommends a product who gains nothing by using it is one thing, when they are sponsored or sell it then that opinion is biased intentionally or unintentionally is entirely an other, you need to do your own research to check both, the later more so ;)
 
Joined
20 Dec 2019
Messages
253
Location
South Carolina
I guess the main reason I appreciated Purigen was it’s recharge capability. You can also see when it’s exhausted as opposed to carbon, or so that’s the claim. Is that the general consensus here, that Purigen is a gimmick?
 

Witcher

Member
Joined
15 Jan 2020
Messages
294
Location
London
cheaper ways to achieve the same goal
Purigen, siporax, phorax, nitrax and other kind of similar rubbish (probably ending with so fashionable "-ax" at the end of the marketing name) can be easily defeated/avoided by simple water changes.
I found it’s helpful with tannins

I personally think tannins (and probably other forms of O/H related acids) are so important to tanks/lakes/rivers etc. stability that I'd personally avoid removing them. They are perfect "rubbish" binders (by coagulation of freely floating compounds) and they stabilise water acidity (no pH jumps up and down etc.).
 
Joined
20 Dec 2019
Messages
253
Location
South Carolina
I don’t disagree with that, but when your tank looks like a planted black water tank, things tend to look dull and colors don’t truly pop.

In terms of “simple water changes”, I’d agree that a 20 gallon or less is easy enough to do multiple times. Anything higher it’s a tedious task that many of us are lucky we get once a week to do it. If I did multiple water changes a week I think my wife would have my head. But I don’t disagree that’s the natural solution. I don’t use Purigen as a crutch or a bandaid, it’s a useful tool IMO. But if I’m wrong and it’s all pseudo science then I’d be happy to kick it.
 

dw1305

Expert
Joined
7 Apr 2008
Messages
10,951
Location
nr Bath
Hi all,
I personally think tannins (and probably other forms of O/H related acids) are so important to tanks/lakes/rivers etc. stability that I'd personally avoid removing them. They are perfect "rubbish" binders (by coagulation of freely floating compounds) and they stabilise water acidity
I'm a fan of <"humic substances"> as well. If you keep a Reef Aquarium, or Lake Tanganyika cichlids, you might want to reduce DOM, but even then there will be some present.

I think this should be available to everyone <"Dissolved humic substances – ecological driving forces from the individual to the ecosystem level?">

cheers Darrel
 

dw1305

Expert
Joined
7 Apr 2008
Messages
10,951
Location
nr Bath
Hi all,
You can also see when it’s exhausted as opposed to carbon, or so that’s the claim. Is that the general consensus here, that Purigen is a gimmick?
No, I think it does what it says on the packet. Have a look at page 3. of <"FeEDDHA">.

If you want "gin clear" water for aesthetic reasons, then Purigen is of interest to you. If you want it to reduce levels of DOM in your tank? then there are other options.

cheers Darrel
 
Joined
20 Dec 2019
Messages
253
Location
South Carolina
Hi all,

No, I think it does what it says on the packet. Have a look at page 3. of <"FeEDDHA">.

If you want "gin clear" water for aesthetic reasons, then Purigen is of interest to you. If you want it to reduce levels of DOM in your tank? then there are other options.

cheers Darrel
Thanks Darrell. I knows nothing beats consistent water changes, but in terms of water clarity I do enjoy having the Purigen at my disposal.
 

alto

Member
Joined
24 Dec 2014
Messages
5,991
I really dislike the term "polishing of water" because it's a meaningless phrase invented by someone who didn't really understand what these types of resins actually do. They use it, the water gets clearer but no one know why, so they invent a phrase based on some kind of metaphor, like polishing furniture.

While I realize this is quote of a quote (from some while ago) ... I can’t resist mentioning that Seachem did not “invent” this term - it’s been used by manufacturers of high quality water purification systems for 40 years (or perhaps even longer)
And the manufacturers certainly did know what they were promising and provided the specifications and identified compounds to back their “polishing” claims

@Mr.Shenanagins - the Seachem Discussion Board is back up again, so you can find considerable discussion/information from various points of view

Seachem certainly did studies on what/how much Purigen removes from test water (including planted tanks) - though I don’t know how much of that information remains publicly available
(re changes in company structure over the years, also legislation, labelling, import/export regulations etc etc)

If you live in an area where water reservoirs are peat basins or extracted ground water has seeped through layers of peat, Purigen is a Wondrous Thing
- that can be regenerated multiple times
(regeneration/recovery seems to work better if done more frequently rather than waiting until the beads are deeply discoloured)
 
Joined
17 Mar 2012
Messages
1,342
Location
Dorset
I neglected to say earlier but a box of Siporax media came with the last filter I bought and seems to be working well enough. It’s also easy to clean at filter maintenance time.
 

Similar threads

Top