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Old 04/27/2008, 09:24 PM   #1
bertoni
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Reef Chemistry Articles, Links, and Notes

The chemistry article thread has been moved to the archives:

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Old 04/08/2009, 11:21 PM   #2
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An alkalinity reference solution
Alkalinity Testing Without a Kit
Aragonite adsorption of phosphate
Calculator
Carbon sources
Copper
GFO Regeneration
GFO Regeneration Spreadsheet
Increasing test kit accuracy
Phosphate
Reactor Setup Calculator
Salt Mixes
Test Kit Instructions
Vinegar Dosing
Vodka dosing


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Old 02/24/2014, 07:28 PM   #3
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Some rules of thumb:

One gallon of saturated limewater is equivalent to about 86 ml of the recipe 1 DIY 2-part.

Add about 0.52 grams of sodium nitrate per 100 gallons of water to raise the nitrate level by 1.0 ppm. That's about 1 tsp per 500-1000 gallons, very roughly.

Adding 1.25% of the total tank volume with saturated kalk water will boost pH by an unacceptable 0.6 to 0.7 pH units and add about 1.4 dKH.

Adding 1/11,000 of the water volume as muriatic acid will drop alkalinity by 1 meq/l (2.8 dKH).

Adding 1 ml vinegar per gallon will drop the pH by 0.3 units.

Adding 6 ml soda water per gallon will drop the pH by 0.3 units.

A 1.4 dKH addition of the recipe 1 DIY two-part boosts pH by about 0.35 pH units.

A 1.4 dKH addition of the recipe 2 DIY reduces the pH about 0.06 pH units.

1/2 tsp of borax added to one quart of RO/DI water yields a solution with a pH of about 9.2.

15 mg/gallon of trisodium phosphate yields about 1 ppm phosphate.

To make a DIY version of Red Sea NO3:PO4-X, mix:
    375 ml 80 proof vodka
    500 ml vinegar (5% acetic acid)
    125 ml RO/DI water


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