Reef Chemistry Articles, Links, and Notes

bertoni · 04/27/2008, 09:24 PM

The chemistry article thread has been moved to the archives:

http://archive.reefcentral.com/forum...hreadid=102605

This link works when the archives are down:

http://www.reefcentral.com/forums/sh....php?t=2127046

bertoni · 04/08/2009, 11:21 PM

An alkalinity reference solution
Alkalinity Testing Without a Kit
Aragonite adsorption of phosphate
Calcium Reactor Setup Calculator
Calculator
Carbon sources
Copper
GFO Regeneration
GFO Regeneration Spreadsheet
Increasing test kit accuracy
Phosphate
Salt Mixes
Vodka dosing chart (with notes about vinegar dosing)
Test Kit Instructions

Older references:

Vinegar Dosing
Vodka dosing

bertoni · 02/24/2014, 08:28 PM

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. For potassium nitrate, use about .62 gram per 100 g.

Add about 0.76 grams of potassium chloride per 100 gallons of water to raise the potassium level by 1 ppm.

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). That's about 3.3 ml per 10 gallons.

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 fairly dilute phosphate supplement using 100% trisodium phosphate:
    Add 1.88g to 1 liter water.
    Adding 1 ml per liter of tank water will boost phosphate by 1 mg/L.
    Adding 1 mL per 100 L of tank water will boost phosphate by 0.01 ppm

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

04/27/2008, 09:24 PM	#1
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	Reef Chemistry Articles, Links, and Notes The chemistry article thread has been moved to the archives: http://archive.reefcentral.com/forum...hreadid=102605 This link works when the archives are down: http://www.reefcentral.com/forums/sh....php?t=2127046 __________________ Jonathan Bertoni Last edited by bertoni; 12/27/2016 at 05:04 PM.

04/08/2009, 11:21 PM	#2
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	An alkalinity reference solution Alkalinity Testing Without a Kit Aragonite adsorption of phosphate Calcium Reactor Setup Calculator Calculator Carbon sources Copper GFO Regeneration GFO Regeneration Spreadsheet Increasing test kit accuracy Phosphate Salt Mixes Vodka dosing chart (with notes about vinegar dosing) Test Kit Instructions Older references: Vinegar Dosing Vodka dosing __________________ Jonathan Bertoni Last edited by bertoni; 05/19/2018 at 06:45 PM.

02/24/2014, 08:28 PM	#3
bertoni RC Mod Join Date: Mar 2002 Location: Mountain View, CA, USA Posts: 88,616	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. For potassium nitrate, use about .62 gram per 100 g. Add about 0.76 grams of potassium chloride per 100 gallons of water to raise the potassium level by 1 ppm. 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). That's about 3.3 ml per 10 gallons. 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 fairly dilute phosphate supplement using 100% trisodium phosphate: Add 1.88g to 1 liter water. Adding 1 ml per liter of tank water will boost phosphate by 1 mg/L. Adding 1 mL per 100 L of tank water will boost phosphate by 0.01 ppm 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 __________________ Jonathan Bertoni Last edited by bertoni; 07/15/2020 at 09:52 PM.

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