New RANDY's 2 part

[fishtk75]

Any one use Brightwell Aquatics ?
The Dow brand on the list that is Anhydrous of Reef Chemistry Calculator. I see at the LFS they have Brightwell Aquatics brand of Anhydrous high-purity type is that stronger then Dow? How do you calculate it then?

http://www.brightwellaquaticlabs.com/br_base.html

 

[jdieck]

Calcium chloride anhydrous (Powder) contains more calcium by weight than calcium chloride di-hydrate (Dow Flake) which contains water molecules. In general you will need about 1/3 less anhydrous than di-hydrate.
Other calcium chlorides like ESV and Turbocalcium from Kent contain the anhydrous form.

Use the chemistry calculator and select Calcium Chloride Anhydrous from the list.

 

[fishtk75]

<a href=showthread.php?s=&postid=13194162#post13194162 target=_blank>Originally posted</a> by jdieck
Calcium chloride anhydrous (Powder) contains more calcium by weight than calcium chloride di-hydrate (Dow Flake) which contains water molecules. In general you will need about 1/3 less anhydrous than di-hydrate.
Other calcium chlorides like ESV and Turbocalcium from Kent contain the anhydrous form.

Use the chemistry calculator and select Calcium Chloride Anhydrous from the list.

jdieck,
Ok then it is the same as EVS and Turbocalcium It was not on the list and it said it is stronger than other anhydrous.

 

[kugavin]

Has anyone tried removing the Bromine(s)?

Most pure Br is extracted from seasalts why not just displace the Br- with Cl-?

If this was covered I apologize.

 

[jdieck]

<a href=showthread.php?s=&postid=13204291#post13204291 target=_blank>Originally posted</a> by fishtk75
jdieck,
Ok then it is the same as EVS and Turbocalcium It was not on the list and it said it is stronger than other anhydrous.

Yes as mentioned above, it contains more calcium by weight than calcium chloride dihydrate so in that sense is more concentrated than dow-flake but it has the same calcium content by weight as any other of the anhydrous forms; typical 33 to 36.1% max. depending on it's moisture content. ESV's Calcium Chloride, Turbo Calcium from Kent and Brightwell's Calcion-P claim to be the anhydrous form.

 

[fishtk75]

<a href=showthread.php?s=&postid=13208240#post13208240 target=_blank>Originally posted</a> by jdieck
Yes as mentioned above, it contains more calcium by weight than calcium chloride dihydrate so in that sense is more concentrated than dow-flake but it has the same calcium content by weight as any other of the anhydrous forms; typical 33 to 36.1% max. depending on it's moisture content. ESV's Calcium Chloride, Turbo Calcium from Kent and Brightwell's Calcion-P claim to be the anhydrous form.

jdeick,
Thanks just making sure I was reading right. So I do not put too much in.

 

[altunian]

My pH is a bit high (8.5), so I have to use the 2nd recept. But as I compare the first and the second one, I see, that they are actually the same, only the concentration of the second is exactly 50%, compared to the first, but the applied amount of the solutions is doubled - so where is the difference between Recept #1 and #2?

 

[Randy Holmes-Farley]

Recipe 1 is baked baking soda so it has a pH raising effect. Recipe 2 is not baked, and has no pH raising effect. It is less concentrated because the unbaked baking soda is less soluble in fresh water.

 

[GRREEF]

According to a few articles I've seen, certain red algae use Br. Especially those of the Rhodomelaceae family. See A New Poly Brominated Dibenzylphenol from R. confervoides ; see also, Natural Halogenated Mononuclear Phenol Compounds and Their Derivatives.

I realize many of these are likely not good for a reef aquarium. But perhaps there may be some that are.

Of course the effectiveness would depend on the concentration of Br in DOW and the uptake of Br by the algae.

Anyway..it's an idea and I throw it out there for consideration.

 

[Randy Holmes-Farley]

Thanks.

Yes, algae do use bromide, but likely not enough even if the macroalgae in a refugium is using it. That is the basis for the calculations I did here:

http://www.reefcentral.com/forums/showthread.php?s=&threadid=1368072

 

[Reefer08]

So whats the final conclusion on the calcium part? Is it safe to use the dowflake or peladow even with the Bromide increase?? Whats the final word on this? Thanks

 

[bertoni]

It's not recommended for use as a supplement.

 

[doc2981]

calcium reactor & two part mag.

calcium reactor & two part mag.

I'm setting up a new tank with a Geo 618 reactor.The tank is 140g with total water of 180g.It will be full of liverock and a full load of sps moved from an existing tank.I want to switch from Salifert magnesium to your Recipe for the two part and wondered if there would be anything wrong with doing that and if you had a thread somewhere or info. on the best way to approach this.

 

[Randy Holmes-Farley]

If you are just using the magnesium part, I'd use a slightly different recipe (more MAG flake, less Epsom salt) to maintain ionic balance, and it is shown here:

Do-It-Yourself Magnesium Supplements for the Reef Aquarium
http://reefkeeping.com/issues/2006-07/rhf/index.php

 

[doc2981]

question

question

Randy I really respect your opinion and thankyou for replying to my post.In using a reactor and mixing magnesium at home what mix of flake to epsom would you recommend...3 to 1?

 

[jdieck]

Re: question

Re: question

<a href=showthread.php?s=&postid=13337360#post13337360 target=_blank>Originally posted</a> by doc2981
Randy I really respect your opinion and thankyou for replying to my post.In using a reactor and mixing magnesium at home what mix of flake to epsom would you recommend...3 to 1?

From Randy's article linked above:

A certain mixture of magnesium chloride and magnesium sulfate has no net effect on seawater's major anions (chloride and sulfate). All that is necessary for such a recipe is to add these two ingredients in such a ratio that they add chloride and sulfate in the ratio naturally present in seawater (which is 7.1 to 1 on a weight basis and 9.6 to 1 on a per ion basis).

To perfect such a recipe, it's imperative to know the amounts of sulfate in Epsom salts (39%), the amount of chloride in magnesium chloride hexahydrate (34.9%), and their bulk densities, because most aquarists will use a volume based measurement (1.05 g/cm3 for Epsom salts and 0.85 g/cm3 for magnesium chloride hexahydrate solids). Taking all these factors into account, the desired volume ratio is 10:1, MAG flake to Epsom salts, as a supplement; for instance, 10 cups MAG flake and 1 cup Epsom salts

Note that this ratio is to be used when supplementing using Kalk or a calcium reactor (your case) and that the mix ratio for a Magnesium supplement to use when using the DIY two part system will be different.

 

[TheFlyingTang]

Has anyone looked into Dow's new Dowflake xtra? Reported to have 83-87% calcium chloride?

Could all the old bags still be good and this new stuff be the higher bromide content?

 

[Randy Holmes-Farley]

Old bags will be fine forever. I'm working off a bag that is at least 5 years old.

The Dowflake extra and all current Dow calcium chloride products regardless of grade now have too much bromide.

 

[snaza]

Do i need to worry about dosing trace element with this 2 part? like the balling method

thanks

 

[Randy Holmes-Farley]

There are plenty of trace elements already in it, like other two part systems. But I would not eliminate water changes too.