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10/14/2017, 11:36 AM
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#1 |
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Registered Member
Join Date: Jul 2012
Location: E Quogue, NY
Posts: 139
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Trisodium Phosphate
Does anyone have any experience dosing Food Grade Trisodium Phosphate to raise Phosphate? If so what is a general dosing guide?
Mike |
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10/14/2017, 04:55 PM
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#2 |
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RC Mod
 Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
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Standard hydrated trisodium phosphate is about 25% phosphate by weight, so 1 ppm = 1 mg/L would be about 4 mg/L or about 15 mg / gallon. What's your target dose? Do you have a small scale handy? Is your TSP in the hydrate form? I suspect that it is, but I'd like to be sure.
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Jonathan Bertoni |
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10/14/2017, 05:30 PM
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#3 |
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Registered Member
Join Date: Jul 2012
Location: E Quogue, NY
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It is in dry power form. I have a jewlery scale to measure the chloroquine phosphate I use in QT tanks. Not sure on a target dose, I need to get my phos levels up. I have 1200 gallons total volume.
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10/14/2017, 06:41 PM
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#4 |
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RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
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Well, if you want to add .01 ppm, that'd be 1200 * 3.79 * 4 = 18192 mg total, or about 4 grams or so. I might dose ¼ of that, in case I made a math mistake or the trisodium phosphate is anhydrous. You could try the formula on a 5 - 100g container or so if you wanted to be very careful, and the scale is accurate on that level.
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Jonathan Bertoni |
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10/14/2017, 08:07 PM
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#5 |
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Registered Member
Join Date: Jul 2012
Location: E Quogue, NY
Posts: 139
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That starting dose would be per day?
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10/14/2017, 08:18 PM
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#6 |
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RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
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You could start with a dose like that to see what the results might be. I am not sure what the problem with the tank is, so I don't know how appropriate the amount might be.
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Jonathan Bertoni |
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10/15/2017, 08:28 AM
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#7 |
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Registered Member
Join Date: Jul 2012
Location: E Quogue, NY
Posts: 139
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I will give it a shot. If everything dies its your fault lol
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10/15/2017, 12:31 PM
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#8 |
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RC Mod
Join Date: Mar 2002
Location: Mountain View, CA, USA
Posts: 88,616
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I did make a math mistake. You will need to divide by 100. Argh!
I would measure the phosphate about 5 minutes after dumping the supplement into the display, to see what the change might be. It should be undetectable.
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Jonathan Bertoni |
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