Magnesium Group Buy

[Hef]

Hello Philiadelphia,
I'm putting together a Group Buy for Magnesium Chloride in the NJRC Forum. I still have about 12 bags at this point, I need to get up to 40. $12 per bag, pickup would be your resposibility.
Lots of info in the thread, most of it from the Boston Reefers Club.
The 12 bags will probably go quick, I cannot go over 40.

Thanks Hef.



http://reefcentral.com/forums/showthread.php?s=&threadid=717359&perpage=25&pagenumber=1 (http://archive.reefcentral.com/forums/showthread.php?s=&threadid=717359&perpage=25&pagenumber=1)

[GettingFiesty]

Anybody in our area thinking of getting a bag or two? I would like to get some, but I don't make it NJ very often.

[Sonia Taro]

I think that I will juat keep up with my water changes.

[Marshall]

How big is a bag? Does that price include shipping to you? How long would a bag last? I could go for a bag. If you could ship it from wherever you are down here it would probably only cost $10 which is practically cheaper than driving.

[Hef]

From the Thread posted above.
No I will not ship it. I have offered to one person "Lunchbucket" (he helped me find the supplier), that I would ship it to him. It's going to cost over $38 to ship. That's a lot.
Read the threads, there is a lot of good info there. Here is some of the info.
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We are buying the MgCl2.6H2O. I plan to just make one gallon batches. Quick calculation, we are buying 25KG bags, 25,000 grams/664 = 37.65 Gallons. A bag will last a while.
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664 grams MgCl2.6H2O
113 grams MgSO4.7H2O (Epsom salts, from the drug store costs $1.99 for 3 lbs)
plus enough DI water to make 1 gallon.

or if you want to do it on a larger scale, using pounds to weigh stuff out:

7.3 lbs MgCl2.6H2O
1.25 lbs MgSO4.7H2O (Epsom salts)
plus enough DI water to make 5 gallons
you don't need to be super accurate on the weighing.

Adding this at the rate of about 10 ml/gallon of tank volume (in a stream of water where it will get mixed into the tank quickly) will increase the magnesium level in your tank by about 100 ppm. It's never a good idea to make changes too fast to a tank's water chemistry, so if your tank is low in magnesium by more than 100 ppm I'd still only add 10ml/gallon/day until you are back around 1250-1350 ppm. So, for instance, if your 100 gallon tank were 300 ppm low in magnesium, you'd need about 3 liters, or almost 1 gallon of this solution to get back into the proper range on magnesium.

[GettingFiesty]

I think I am going to pass. Thanks everybody.