Alternative for dolomite for MTS? - The Planted Tank Forum
 
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post #1 of 14 (permalink) Old 05-01-2013, 12:31 AM Thread Starter
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Alternative for dolomite for MTS?

I'm having a hard time locating dolomite to make some MTS for my 40b. I have read some things online that suggest fluorite is pretty much the same thing, is this true? Also, is it ok to use a clay based floor dry product for the clay in the MTS? Thanks in advance for your help!!
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post #2 of 14 (permalink) Old 05-01-2013, 12:38 AM
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ive herd of people using bonemeal or azomite if you can find ether as for the clay special kitty natural clay litter at wallmart is verry good
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post #3 of 14 (permalink) Old 05-01-2013, 01:11 AM Thread Starter
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Thanks. How about using cuttlebone?
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post #4 of 14 (permalink) Old 05-01-2013, 01:38 AM
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im not sure of the composition of cuttle bone but if you powdered it i think it would work
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post #5 of 14 (permalink) Old 05-01-2013, 01:58 AM Thread Starter
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Thanks what I'm thinking. Anyone else have any opinions?
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post #6 of 14 (permalink) Old 05-01-2013, 04:17 AM
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Dolomite is a magnesium/calcium carbonate - it's also slower to dissolve then most carbonates (it typically won't fizz via the acid test very easily)

(CaMg)(CO3)2

Cuttlefish bone is just calcium carbonate - CaCO3, basically the same stuff as most limestone, crushed coral, oyster shell, etc.

The main mineral component of bone meal should be apatite - Ca5(PO4)3OH, although there is going to be quite a bit of other organic stuff in the bone meal as well.

If you can't get dolomite, I'd try for some form of calcium carbonate - shells, coral, cuttlefish bones, marble, etc. I believe part of the reason to use dolomite is to give some buffering to the lower substrate levels, and prevent them from going too acidic, as well as supplying Magnesium and Calcium cations for plants to use.

I don't really know anything about azomite, and the wikipedia entry looks a bit unreliable, so I don't really have anything to add as to that.

I'm not sure the apatite in bone meal would work very well for this, and I think the additional organic components might cause some problems.

Last edited by lochaber; 05-01-2013 at 04:19 AM. Reason: forgot azomite
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post #7 of 14 (permalink) Old 05-01-2013, 04:50 AM Thread Starter
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Thanks for the reply! I'm going to look a little harder this weekend for some dolomite, but I think I'll have to go with one of the calcium carbonate substitutes.
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post #8 of 14 (permalink) Old 05-01-2013, 11:56 PM
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Dolomite

Hi There Go to www.pawtasticpet.com Tay have the Dolomite go to Gravel look for Estes Ultra Reef Dolomite. good luck
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post #9 of 14 (permalink) Old 05-02-2013, 01:07 PM Thread Starter
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Quote:
Originally Posted by Kareen View Post
Hi There Go to www.pawtasticpet.com Tay have the Dolomite go to Gravel look for Estes Ultra Reef Dolomite. good luck

Not a bad price for the dolomite, but the shipping is $48!!!
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post #10 of 14 (permalink) Old 05-12-2013, 10:23 PM
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Thx Lochaber. I don't have any dolomite handy nor a desire to buy a big bag when I only need a handful or two. However, I do have massive amounts of crushed marble dust from my sculptor friend. Now I can brag to all my friends that my substrate is imported from Italy. Lol.
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post #11 of 14 (permalink) Old 05-12-2013, 11:23 PM
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A local hardware store sells dolomite in the garden section. You might check at a similar store near you.
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post #12 of 14 (permalink) Old 05-13-2013, 12:41 AM Thread Starter
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The dolomite that is found for gardening is dolomite lime. It's dolomite mixed with lime stone, not good for MTS. I bought some aquarium dolomite from a member on another forum.
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post #13 of 14 (permalink) Old 05-16-2013, 01:12 AM
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I've been wondering this too since I cant find dolomite unless its in like 50kg bags.

Can I substitute with calcium carbonate and magnesium chloride?
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post #14 of 14 (permalink) Old 10-25-2013, 03:09 AM
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a little late but you can just buy dolomite powder from any vitamin store (gnc etc. I got mine from http://www.vitaminlife.com/ only a couple bucks for 16oz. It even gives you a break down of whats in it. no surprises here.

Iron 2 mg 11%
Magnesium (as Magnesium Carbonate from Dolomite Powder) 630 mg
Calcium (as Calcium Carbonate from Dolomite Powder) 1100 mg


Just remember that you have to put a fine layer more like a dusting down in the bottom of the tank them build your substrate layers on top of that.
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