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Old 07-13-2015, 07:26 PM   #21
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Originally Posted by TMRC Exotics View Post
So you should revise your statement to chemipure doesn't work as effectively and cost efficiently as its individual compounds?
This is a true statement.

Portions of Chemipure Elite do not work in seawater. This is also true.
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Old 07-13-2015, 07:41 PM   #22
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I understand you have a position, but disagree that you are right. Chemipure wasn't made for 1000 gallon systems with reactors, it was made so small disposable amounts can be used on smaller systems. It's convenient. The resins are as effective in SW as FW, please post actual evidence this isn't the case and I will re-evaluate my opinion.


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Old 07-13-2015, 07:48 PM   #23
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I understand you have a position, but disagree that you are right. Chemipure wasn't made for 1000 gallon systems with reactors, it was made so small disposable amounts can be used on smaller systems. It's convenient. The resins are as effective in SW as FW, please post actual evidence this isn't the case and I will re-evaluate my opinion.


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They are not as effective in saltwater as freshwater. This is a false statement.

I believe Randy Holmes-Farley have responded to a few of the fourm discussions on it. I'd google "Randy Holmes-Farley and Chemipure don't work in seawater" Maybe include Ion Exchange Resin.

Chemipure is quite nice for smaller aquariums, but same argument you can save money by itemizing and not have ion exchange resins that are un-needed except maybe a FEW heavy metals which RO/DI already should have.
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Old 07-13-2015, 07:52 PM   #24
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Of course Boyd would make have their claims on their website too?

Let's open the discussion then on why chemi pure is ridiculous.

Basically it's GFO, Purigen, an alternative to carbon, and some ion resins. I'm sure the GFO will act like most GFOs do. The white stuff in there is basically a polymer exchange resin that can bind some organics. Pretty much like seachem purigen. The carbon is really just carbon unless it's extracting different types of organics. Which is unlikely, but could be complimentary to carbon if this is so.

GFO, Purigen, and Carbon all have different life spans. Why throw it all in one media bag when you can save money and itemize things out and use them to each 100% capability rather than throwing out good product.

The claims are that it removes nutrients. So yes obviously the GFO will remove some phosphate. The Purigen alternative will absorb all organics that lead to nitrate basically. An ion exchange resin in seawater will not usefully absort most inorganic ions such as ammonium, nitrate, or phosphate. There may be some heavy metals it can still get but not working towards the claims they're making.

Great product for a freshwater situation, but in seawater they just don't work..

And let's think about the sizing options for CPE? Dang you gotta use a lot of that stuff for bigger tanks. Why not just get a $12 100ML bag of purigen that lasts 6 months, some GFO in bulk, and a quality carbon. You're saving money and not putting wasted products in the tank.

So I wouldn't say it's an inaccurate claim considering the ion resins they're claiming are responsible for nutrient export do not work. It's the polymer ion taking ammonia basically, and GFO removing phosphate and a cheap carbon. I mean what's the appeal here?
I see, so essentially you have little more than opinion to offer and no supporting research or documentation as I requested.
Disappointing because I was genuinely interested to see some independent research on it.
You really haven't enlightened us any more than what Boyd says is in their product, except you are merely guessing at what it's proprietary constituents actually are.
I will add that your opinions are off base as well because Boyd makes three products, Chemi-Pure, Chemi-Pure Elite and Chemi-Pure blue.
The original is essentially carbon and ion exchange resins.
Elite is the same with the addition of GFO.
Blue is all of the above with what looks like Purigen added and is specifically for reef aquariums.


At least get the product line straight if you are going to malign it.
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Old 07-13-2015, 08:09 PM   #25
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It's all cool. It would be boring if we always agreed. I just like data to support unusual claims.


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Old 07-13-2015, 09:36 PM   #26
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If you guys don't feel enlightened don't do the research haha. It's not my job to do your research. At this point I think I have explained it. If you want the science behind it you are enlightened and need to do some additional research on your own... After elementary school it's the students job to learn not the professors to teach. So you have the topic of research now..

If you still feel fine using the product after reading my responses go ahead. I don't care haha.

I am encouraging you to read Randys responses or do additional research on ion exchange. I'm sorry I have other ways to utilize my time than provide links on research I've already completed in the past. It's not that I wouldn't love to have everything book marked and be able to provide top job acrediations, it just I don't want to take the time to haha. I've already done my part by letting the forms know that this is actually an issue and topic of discussion for reef aquaria and I am not the only one preaching it.

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For ion exchange to be efficient there must be a difference in affinity between the ion in the resin and the ion or ions you want to remove from solution. The resin must have a higher affinity for the ion in solution compared to the ion in the resin.

The ion exchange technology is a perfect tool to remove or exchange contaminants present in low concentrations. In such a case the running time until the resin column is exhausted can be very long, ranging from a few hours to several months. When however the concentration of contaminants is high, say several grams per litre of water, the ion exchange cycles become exceedingly short and the quantity of regenerants increases to uneconomical levels. In the case of brackish water (underground water with high salinity as often found in arid countries) or sea water, ion exchange is not suitable and other technologies must be used, such as reverse osmosis or distillation.

Also, any contaminant that is not ionised cannot be removed by ion exchange. Other technologies are available for this purpose, using activated carbon, polymeric adsorbents, molecular sieves and other media.
Source: http://www.lenntech.com data sheets
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Old 07-13-2015, 09:43 PM   #27
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But that only talks about it being inefficient, not these resins not working at all.
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Old 07-13-2015, 09:49 PM   #28
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But that only talks about it being inefficient, not these resins not working at all.
I'd rather not break down affinity.

EDIt: I actually knew someone was going to say that and I was pretty sure it'd be you. The exchange is inefficient for most. It doesn't work for the claims Boyd has made... Boyd says NO WATER CHANGES FOR HALF A YEAR. Lol It does not work per their claims and there are reasons certain ions it cannot exchange at all in seawater

The quote is also for ion exchange specifically, not directly about our product in discussion.
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Old 07-13-2015, 09:56 PM   #29
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I'm not backing those claims either. Weekly water changes of 10% is almost all but necessary to keep a thriving and healthy reef tank to take out the unwanted and replenish the necessary elements that are absorbed.
My point is is that we can't mislead by saying it won't work when it can. It might not be the path that you or I would take, but it will work for someone who wants to try and continue with proper tank maintenance. Along with that, it isn't something that is even suggested to run when trying to combat whatever, usually guiding towards reduction of feeding and water changes first before the use of any type of product as such...though normally point towards a GFO or Phosguard.
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Old 07-13-2015, 10:00 PM   #30
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My point is is that we can't mislead by saying it won't work when it can.
See right after you say this you say this: "but it will work for someone who wants to try and continue with proper tank maintenance. "

Doesn't that sound misleading hahaha?

I'm sure a someone who's opinion this forum takes seriously and respect, you can appreciate why I may feel this is even extra misleading.

Someone would read this and now think it's possible to make the product work if they do a water change.

I think it's hard for everyone to get past the fact the GFO, Carbon, and Purigen elements in CP products isn't what I'm talking about. These three things are great and will really help an aquarium but the product labeling is wrong and has false advertising.. 4-6months is just wrong for carbon. I think we can all agree there.

When it says inefficient it means it doesn't do it but for trace levels. For all sake and purposes these traces levels aren't even detecteble change on a test kit.

I implore you to heed my words and recognize ion exchange does not have a place in this hobby.
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