New RANDY's 2 part

Per the link above, Dow promises that the Food Grade products will have the historical bromide levels. (Item 3)

The link earlier in this thread shows the food grade to have bromide at 8500 ppm, which is similar to the new Dowflake. The item 3 that you mention says that food grades will also hit these levels in 2007.

http://www.dow.com/calcium/news/August_2005.pdf
 
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Oops, I had a math mistake in the calculation above. I'm reposting data from above:

The level is seemingly high for routine use as a supplement, but it has not been proven too high. It is not too high for a once in a while boost to calcium.

A 100 ppm boost to calcium will boost bromide by about 4 ppm (about 6%). If that depletes as fast as the 100 ppm of calcium, then there is no problem. If not, then it may accumulate. I do not know how high it would need to accumulate to be a concern.
 
Does this look safe to use?

Unfortunately, there is not enough info to say for sure that it is OK. That's why I did extensive testing of Dowflake before recommending it. That said, I do not see any problem with the values shown.
 
I have been using SunCoast Calcium Hardness Increaser which I buy at the pool store. I've been using it for over a year with no ill effects but will take a closer look at it after reading these threads. The label says 77% Calcium Chloride, 23% inert ingredients but doesn 't say what those inert ingredients are. Anybody else usethis, any problems. Should I be worried?
 
The inert ingredients are primarily water, with a few other tidbits tossed in. It's those tidbits that could be a concern, but if you've used it for a year and are happy with the tank, I see little reason to switch. :)
 
<a href=showthread.php?s=&postid=11396800#post11396800 target=_blank>Originally posted</a> by lecher
http://www.aquaticeco.com/index.cfm/fuseaction/product.detail/iid/22679
Click to expand...

I emailed AquaticEco about their product and received this response:

Thank you for checking with Aquatic Eco-Systems. Here is the breakdown on CCB1, the beaded product which we carry at present:

Anhydrous

CaCl2 94%
Arsenic as As <3mg/kg
Flouride < 40 ppm
Heavy Metals < 20 ppm
Lead < 5mg/kg
Magnesium and Alkalai salts < 5%


Would this be a safe alternative to Dow flake? How much of this would be required in the formula to replace the dow flake?
 
It doesn't give enough info to compare to Dowflake. That is the same spec that Dow's food grade meets, but Dow now has too much bromide. It might be repackaged Dow material.
 
<a href=showthread.php?s=&postid=11411486#post11411486 target=_blank>Originally posted</a> by Randy Holmes-Farley
It doesn't give enough info to compare to Dowflake. That is the same spec that Dow's food grade meets, but Dow now has too much bromide. It might be repackaged Dow material.
Click to expand...

What specific questions do I need to ask?
 
<a href=showthread.php?s=&postid=11404014#post11404014 target=_blank>Originally posted</a> by Randy Holmes-Farley
How did you determine that? By a lot number on the bag followed by the code described in the Dow press release?

I figured they'd all be new by now, but I'd be glad to be wrong. :)
Click to expand...


Yes. I checked the lot number for the codes someone posted above. Also, there was a number that appeared to be a date below the lot number which read 3/06.
 
well I am not very good with all this chemistry stuff, but I have done as much reading as I can understand. you said the best way to deal with this is to pay more get something else.



Here I have 3 questions

At the price of B-Ionic it is cheeper in the long run to get a clacium reactor?

Can I / Should I assume that the stuff I/we get from 2part.com is safe to use in our tanks? meaning are they going to stop selling when they run out of the old stuff?

Should I stop using the mix I am using now?

Anything you can tell me would be great.

just wondering what are the chances companys like B-ionic would pay dowflack and such companies to make the level questionalble for tanks. Just a thought not a question.

Roger
 
Interesting! I am so glad I never gave away any of the 5g bucket of Pedlow I bought. I know the guy I got it from bought it several years ago, so it should be fine, right? Since all I use is 1 tsp/day, it'll probably last me forever.
 
At the price of B-Ionic it is cheeper in the long run to get a clacium reactor?

For anything except a small tank, yes. Limewater is also inexpensive. I compare costs here (although the prices are a bit dated now):


How to Select a Calcium and Alkalinity Supplementation Scheme
http://www.advancedaquarist.com/issues/feb2003/chem.htm


I am so glad I never gave away any of the 5g bucket of Pedlow I bought. I know the guy I got it from bought it several years ago, so it should be fine, right?

Yep, it lasts forever. :)
 
I emailed twopartsolution.com regarding bromide levels in the dow products. Here is their exact reply:

Mark,

We have been stockpiling calcium chloride with lot numbers predating the December 31, 2006 date on which Dow changed their manufacturing process. There has been a resurgence of a letter dating back to August of 2005 in which Dow first states its intent to change its manufacturing process that would result in an increase in bromide. However, Dow on December 15, 2005, sent out another letter entitled "Addendum to Letter of August 2005: Notification of Impurity Profile Change in Calcium Chloride Products". Item 1 from this letter states:

"The date for ending the bromide removal process, initially scheduled for December 31st of 2005, has changed to December 31, 2006.”

This letter has been linked to earlier, but buried in some of the same threads discussing the bromide issue that have posted the original August 05 letter.

We have been aware of this since starting our business and verified that all Dow we purchased had lot numbers starting with U. Lot numbers starting in U were manufactured in 2006. We have also been stockpiling as much 2006 Dow as possible in order to provide an uninterrupted supply of economical calcium chloride to our fellow reefers. This also allows us time to source an alternative source.

As a last note, we use our products in our own tanks. If we didn’t think a product was safe enough for our own use we wouldn’t sell it to others.

Let me know if you have any further questions.

Andrew Duneman
Email: andrew@reefchili.com
Fax: 763.546.1720
www.twopartsolution.com
Click to expand...
 
I finally broke down and ordered some food grade Calcium Chloride from Two Part. Probably could have found some locally but it's not worth the hassle IMO. I'd rather pay them to source the right batch numbers, plus by using a product that a large number of other RC members are using I should find out quickly if there are any problems with it. The Bromide scare must be the best thing that's ever happened to their business.

Rob
 
Randy,
Is there a way to agitate this stuff ut like protien skimming or activated carbon?
 
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