New RANDY's 2 part

[Randy Holmes-Farley]

FWIW, here's the link that Greg posted in a clickable form:

http://www.discovertesting.com/produ...%20Spa%20Check

[jasonmartin1313]

Randy any ideas if this is suitable?
Brand SWI it came in from China

SWI Calcium Chloride 77-80% Pure Flake 80#
CAS# Calcioum Chloride 010043-52-4 77-80%
Sodium Chloride 007647-14-5 1.5-2.5%
Potassium Chloride 007447-40-7 1.0-2.5%
Water 007732-18-5 Balance

[Randy Holmes-Farley]

One cannot tell from such an analysis.

[hypernesia]

I contacted the company that sells the Bromine test kits. It reads from 0-20ppm. 1mg/l = 1 ppm so that reads to low for use in reef aquaria. Correct me if I'm wrong?

[jdieck]

Originally posted by hypernesia
I contacted the company that sells the Bromine test kits. It reads from 0-20ppm. 1mg/l = 1 ppm so that reads to low for use in reef aquaria. Correct me if I'm wrong?

If there is no other interference, it might be possible to get a good approximation reading by diluting the sample using RO/DI or distilled water.

[Randy Holmes-Farley]

We are concerned with bromide (Br-), not bromine (Br2). Bromine test kits as for pools are not useful for us.

The difference is the same as chloride (Cl-; 19,000 ppm in seawater) and chlorine (Cl2; 1 ppm will kill everything in the tank).

[hypernesia]

Trial and error right? 5ml sample diluted in 100ml RO/DI. If you get a reading on the test kit multiply by 20?

[hypernesia]

Oops. Correct So its back to nitric acid and Silver nitrate. Even if i could get my hands on it my wife wouldn't let it in the kitchen

[Randy Holmes-Farley]

I doubt that will work in seawater either.

[hypernesia]

FWIW I have been using this years Prestone Driveway heat since Oct 07 havevn't seen anything suspicious. Just caught this thread a week ago. So is anyone willing to be a guinea pig with the new Dow product? Even though I haven't seen an issue in my tank, I'm not sure I want to be the one, killing livestock isn't worth the rick IMO

[Randy Holmes-Farley]

I'm sure lots of folks have been using it, but if they have any troubles they won't know that this might be a possibility. Especially when we don't know what to even look for as the first sign of a problem.

[hypernesia]

Understand... kalk reactor here we come

[tmz]

Originally posted by hypernesia
FWIW I have been using this years Prestone Driveway heat since Oct 07 havevn't seen anything suspicious. Just caught this thread a week ago. So is anyone willing to be a guinea pig with the new Dow product? Even though I haven't seen an issue in my tank, I'm not sure I want to be the one, killing livestock isn't worth the rick IMO

FYI You are already. Prestone Driveway Heat is a Dow product. Anhydrous cacium chloride.(it has less water than the flake)

[jdieck]

Originally posted by tmz
FYI You are already. Prestone Driveway Heat is a Dow product. Anhydrous cacium chloride.(it has less water than the flake)

Actually it seems to be monohydrate rather than anhydrous. In any case it has less water than the flake (dihydrate) which will make only a diference in concentration of Calcium and Chloride per unit of weight