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Boomer · 10-11-2007, 11:13 AM

Dr and Prow have it right

They announced this months ago and we are past that in product of these DOW's but we do not know if anyone (us) is actually buying new bags of DOW with the very high Bromide. Most suppliers still have the old stuff. One wold need a lot number and then call or contact DOW to see if it is the new stuff. NSW has like 65 ppm Bromide .

Here was my RC Chem forum reply, with a slight re-edit

Bromide is a natural minor component of seawater @ 65 ppm. Bromide does not convert to bromate unless it goes through a double oxidation and you only get that with a strong oxidizer, such as ozone. @ 100 ppm was fine in the old DOW but now going to 6000 and 8500 ppm is way to excessive. 60-85 x the past amount.

Their range of Bromide will be 6000-8500, depending on which DOW it is. Dow that we use is usually 77-80% Calcium Chloride or 770,000 - 800,000 ppm. That means the bromide will now make up .65 -.85 %. That does not sound like a lot but it is, especially when we do not know much about bromide. To bad when Randy did his ICP assay on Dow he never checked the Br levels. There is also no way "we" can measure bromide there is no test kit.

Although bromide is no different than chloride, for the most part , it is quite different than chloride if one is using ozone. Bromide is 50,000 x more thermodynamically available than chloride, when it comes to oxidation, with zone and producing a bleach. It is the production of hypobromous acid and bromate produced by ozone for the reason behind treating all ozonated water with GAC.

I know of no studies on what or how elevated bromide levels would affect marine life.

The addition of any sup's other than kalk add unwanted ions. It is not just chlorides but Potassium, Sodium, Sulfate, etc. How great it would be if everyone could get by with just kalk or only a calcium reactor ( which also add unwanted ions but is much more limited than others like two-parts ).This is all discussed in our on-line magazine articles. In short, a 30 % WC /M will produce almost a flat graph where all ions are in balance to more normal NSW.

What you posted here Cham, with the bromide, is an addition to what they said before. Before, it is as others are doing to use in this hobby. These "salts" are not to be used in aquariums. In some recent talks, I had with Church & Dwight, they told me flat out, "do not use baking soda in an aquariums", it is not intended for that purpose". They, like others now, are just trying to cover their butts.

10-11-2007, 11:13 AM	#7 (permalink)
Boomer Reef Sanctuary's Mr. Wizard Join Date: Nov 2003 Location: Duluth, Minnesota Posts: 2,204 View Gallery Karma Komment	Re: Is Dowflake still safe? Dr and Prow have it right They announced this months ago and we are past that in product of these DOW's but we do not know if anyone (us) is actually buying new bags of DOW with the very high Bromide. Most suppliers still have the old stuff. One wold need a lot number and then call or contact DOW to see if it is the new stuff. NSW has like 65 ppm Bromide . Here was my RC Chem forum reply, with a slight re-edit Bromide is a natural minor component of seawater @ 65 ppm. Bromide does not convert to bromate unless it goes through a double oxidation and you only get that with a strong oxidizer, such as ozone. @ 100 ppm was fine in the old DOW but now going to 6000 and 8500 ppm is way to excessive. 60-85 x the past amount. Their range of Bromide will be 6000-8500, depending on which DOW it is. Dow that we use is usually 77-80% Calcium Chloride or 770,000 - 800,000 ppm. That means the bromide will now make up .65 -.85 %. That does not sound like a lot but it is, especially when we do not know much about bromide. To bad when Randy did his ICP assay on Dow he never checked the Br levels. There is also no way "we" can measure bromide there is no test kit. Although bromide is no different than chloride, for the most part , it is quite different than chloride if one is using ozone. Bromide is 50,000 x more thermodynamically available than chloride, when it comes to oxidation, with zone and producing a bleach. It is the production of hypobromous acid and bromate produced by ozone for the reason behind treating all ozonated water with GAC. I know of no studies on what or how elevated bromide levels would affect marine life. The addition of any sup's other than kalk add unwanted ions. It is not just chlorides but Potassium, Sodium, Sulfate, etc. How great it would be if everyone could get by with just kalk or only a calcium reactor ( which also add unwanted ions but is much more limited than others like two-parts ).This is all discussed in our on-line magazine articles. In short, a 30 % WC /M will produce almost a flat graph where all ions are in balance to more normal NSW. What you posted here Cham, with the bromide, is an addition to what they said before. Before, it is as others are doing to use in this hobby. These "salts" are not to be used in aquariums. In some recent talks, I had with Church & Dwight, they told me flat out, "do not use baking soda in an aquariums", it is not intended for that purpose". They, like others now, are just trying to cover their butts. __________________ Boomer Want to Talk Chemistry ! The Reef Chemistry Forum Want to See More ! The Coral Realm If you See Me Running You Better Catch-Up An explosion can be defined as a loud noise, accompanied by the sudden going away of things, from a place where they use to be.