New RANDY's 2 part

Anybody know if the same is true regarding Prestone Driveway Heat? I'm curious if it is also a Dow product?

And Randy (or someone else), do we know what chemical form of bromine is in the new Dow? I was under the impression that many Halogens were able to evaporate out of solution if let stand long enough. Been a long time since I took Chemistry though :)
 
so the 50# bag of DOW i bought 6 months ago is no good now.....ah damnit...what the heck am i going to do now???

at what point do these levels of bromine become unacceptable? as i have been using two part for at least 6 months now...
 
<a href=showthread.php?s=&postid=11388104#post11388104 target=_blank>Originally posted</a> by NanoReefWanabe
so the 50# bag of DOW i bought 6 months ago is no good now.....ah damnit...what the heck am i going to do now???

at what point do these levels of bromine become unacceptable? as i have been using two part for at least 6 months now...
Click to expand...
It might be good if it came from stocks and was produced before the change.
 
What about using a teaspoon of pickle lime to one gallon of ro water. And if your ph gets high just add 1/8th a cup of vinager
 
pickling lime is the same as kalkwasser...ALK and CAL...

when did the change take place? and how would i find out the production date of my bag of DOW?
 
Change took place at the factory 31 December 2005. How long it took to work it's way through the supply chain is something else.

No doubt much of the world's remaining supply has been used to melt ice over the last week :(

Announcement from Dow (affects ALL Dow CaCl2 products)
http://www.reefwerks.com/media/August2005.pdf

I don't know what Tetra food-grade costs, but I found reagent-quality at $5/lb in bulk online at:

http://www.spectrumchemical.com/retail/product.asp?catalog_name=Chemicals&product_id=5561538

I'd think Tetra would be less than that, but $5/lb with no worries isn't bad either.
 
<a href=showthread.php?s=&postid=11388104#post11388104 target=_blank>Originally posted</a> by NanoReefWanabe
so the 50# bag of DOW i bought 6 months ago is no good now.....ah damnit...what the heck am i going to do now???

at what point do these levels of bromine become unacceptable? as i have been using two part for at least 6 months now...
Click to expand...

According to the press release you can look at the lot number. If it has a "U" or a "PC" then it is not good to use. The problem is that this desination was only in effect until the end of 2006.

I'd say you are better off ordering from twopartsolution or finding another alternative as suggested above.

I hear great things about b-ionic even though the price is higher.
 
<a href=showthread.php?s=&postid=11381994#post11381994 target=_blank>Originally posted</a> by bertoni
Peladow is made the same way as the flake, I believe. TwoPartSolutions.com is selling calcium chloride that they claim is okay, and I haven't heard any problems with it reported.
Click to expand...

Has anyone heard any problems with tanks using later versions of Dowflake?
 
<a href=showthread.php?s=&postid=11384320#post11384320 target=_blank>Originally posted</a> by Randy Holmes-Farley
Actually, limewater may be a better option as it is still cheap. :)
Click to expand...
I use limewater. Set it up in a fashion similar to your description of your set up in your article except for the pump. I was able to get a used liter meter at a reasonalbel price and use it. I also use a calcium reactor and the two work very well toghether. I was able to figure this out with the help of your articles. Thankyou.:)
 
Prestone Driveway Heat is manufactured by DOW for clarification.
 
Thanks for the clarification. This seems highly impacting to tons of reef keepers. I vote to Sticky.

Also since this change apparently happened back in Dec 2005, why are we just now hearing about it? I've been using Driveway Heat all year and haven't seen any huge impacts.

What should the specific impacts be?
 
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I have been told by some chemistry moderators on other website's that the Tetra line "should" be a safe alternative. The way they process there Calcium Chloride is different then Dow's which means much less Bromide levels according to there sales rep. Levels are even lower then the original Dow.

I have spent many hours looking for the Tetra product and have come to the conclusion that at this time it is extremly difficult to locate. The "food Grade" that tetra makes will not be available much longer and is 10-20x's more expensive according to a Tetra sales rep (not an option IMO). I have spoke to a few reefers that are using some misc Tetra products but it's to soon to tell. Even if it works it is very hard to find unless you want a pallet. One guy found some Tetra at a pool store.

I have found a product called Kemira from a local hardware store which is now owned by Tetra and is suppose to be a Tech grade. Again I have been told by other moderaters from other websites that this "should" be safe. I just mixed up my first gallon and noticed the color is tannish color instead of white. I'm not sure what to think of it.

Greg
 
agreed, this should be a sticky with the word warning in front of it. as far as the tetra product being safe do you have a full break down of of it's makeup so that maybe someone here could determine if it is a good alternative and that there aren't other unsafe elements?
 
There are a number of Tetra calcium chloride products. I believe Randy mentioned earlier in this thread that although he's to busy to perform experiments with the different products, he is willing to look over some spec sheets.

Also, two part solutions sent me an e-mail saying thay are aware of the situation, they have alot of the older Dow product in reserves, and when it is used up they have a supior product lined up. I asked if the product was in the Tetra line but they never responded. I'm sure they would rather not say because of buisness/profit reasons.

Greg
 
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