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Matt_Wandell
09/23/2010, 09:50 PM
We have a recipe from a public aquarium with a very successful coral display. Curious about other recipes, if you're willing to share. :D

Have people looked into simply buying the necessary components themselves? Seems like it'd be prohibitively expensive for a lone individual, mostly due to the necessity of buying in bulk for some ingredients, but a club could save bundles on it.

Thanks!

VacavilleFC3S
09/23/2010, 09:53 PM
how about sharing the recipe you have??

wickedfish
09/23/2010, 11:15 PM
This thread is dead without the meat of the sandwich...get me that recipe j/k but thread would be alot more interesting with details on what you are talking about. I wouldnt even know where to start mixing my own so do tell.

Matt_Wandell
09/24/2010, 12:48 AM
It's not my place to share their recipe publicly. Anyhow, anything above 1ppm should be pretty straightforward to figure out by looking at constituents of seawater: NaCl, MgCl, MgSO4, NaHCO3, yada yada...
http://www.mbari.org/chemsensor/pteo.htm
http://www.seafriends.org.nz/oceano/seawater.htm#salinity

The part where it's up to a bit of guesswork is to know which trace elements are a necessity and which aren't, and which are already being added as contaminants from the other portions. Ours has the following ions intentionally added (if I remember right!)

Rb
Ba
I
Zn
Cu
Co
Fe
Mn
Cr
Al
Li

HighlandReefer
09/24/2010, 06:00 AM
See this thread for making your own salt mix:

http://www.reefcentral.com/forums/showthread.php?t=1425283&highlight=make+salt+mix

From this thread:

Here's a recipe for a DIY mix:

What is seawater
http://reefkeeping.com/issues/2005-11/rhf/index.php

from it:

http://reefkeeping.com/issues/2005-11/rhf/index.php#21

An Artificial Seawater Recipe



--------------------------------------------------------------------------------

For those who are interested, the following artificial seawater recipe is taken from "Chemical Oceanography" by Frank Millero. It makes a recipe that matches 35 ppt seawater in terms of major ions, but does not try to match all minor and trace elements, most of which will be present as impurities in the major elements.

23.98 g sodium chloride
5.029 g magnesium chloride
4.01 g sodium sulfate
1.14 g calcium chloride
0.699 g potassium chloride
0.172 g sodium bicarbonate
0.100 g potassium bromide
0.0254 g boric acid
0.0143 g strontium chloride
0.0029 g sodium fluoride
Water to 1 kg total weight.


IMO, anyone making their own is going to incur a lot of costs to make a small amount.



__________________
Randy Holmes-Farley
Club 65535

Current Tank Info: 120 mixed reef

davyr
09/24/2010, 06:10 AM
Maybe just as easy to go to your LFS and buy a salt bucket,kick it round the garden and mix it for 24hrs.

HighlandReefer
09/24/2010, 06:28 AM
Using food grade chemicals is going to be expensive. Using the certified scientific grades is basically out of most Hobbyists reach economically. I don't know which grade of chemicals the salt mix manufacturers use, but I suspect they use some industrial grade chemicals if not all, due to the decreased costs. Industrial grade chemicals are not tested for contaminates. Food grade chemicals usually take the industrial grades through further refinement, thus increasing their costs. ;)

davyr
09/24/2010, 06:38 AM
Like you say in your previous post,could be expensive so i think that would put a few folk off experimenting. This hobby is expensive enough as it is now without buying MORE chemicals.

Matt_Wandell
09/24/2010, 10:30 AM
Like you say in your previous post,could be expensive so i think that would put a few folk off experimenting. This hobby is expensive enough as it is now without buying MORE chemicals.

In bulk, buying it yourself can be about 1/3rd the cost of buying IO. And that's compared to buying an IO super sack, which weighs about a ton or so (I forget the exact weight) and is considerably cheaper than buying bags/buckets.

Yes, it requires massive amounts of salt to make it worth it...but a couple dozen people could use that amount in a relatively short period of time.

Cost is really the reason TO DO it, not to not do it. I can think of plenty of other reasons to not do it though.

Matt_Wandell
09/24/2010, 10:32 AM
See this thread for making your own salt mix:

http://www.reefcentral.com/forums/showthread.php?t=1425283&highlight=make+salt+mix

Thanks Cliff. :D

HighlandReefer
09/24/2010, 12:45 PM
Your welcome. ;)

Good luck in your group buys.

Curious as to whether you are going to use food grade or industrial grade chemicals?

Matt_Wandell
09/24/2010, 06:22 PM
Your welcome. ;)

Good luck in your group buys.

Curious as to whether you are going to use food grade or industrial grade chemicals?

Me? I work at a public aquarium so we will go through tons and tons of it. AFAIK we are using a variety of grades depending on the chemical.

I put it out there because it seems like something a local club could easily do. I remember the days when people organized the shipment of a pallet of Southdown Sand across the country. That stuff was like gold...

bertoni
09/24/2010, 06:44 PM
You'll also have to find some way to mix it, or perhaps distribute it as a multi-bag salt product. If people have their own scale, they could weigh some of the more common elements at home, and then use the trace elements as appropriate. I think making small amounts of saltwater will be the biggest challenge.