Is my dosing math correct?

[Gribbles]

Total water volume: 90gallons
Volume of solution: 1000ml
Volume of individual dose: 5ml
Ingredient: Monosodium Phosphate, .25tsp

That should raise my phosphate about .015ppm, yes?

I'm using the calculator from

James' Planted Tank - Dosing Calculator

With potassium phosphate, taking 77% of the result from that calculator (I believe I've read Dr. RHF say to do that)

 

[Lavey29]

Why not keep it simple and just feed some pellet food to your fish and reef roids to your corals once a week to raise phosphate?

 

[Gribbles]

I do both of those things currently. Probably could feed reef roids more often.

My phosphates are near zero but my nitrates are high. I carbon dose and want to keep my phosphate detectable without adding nitrate

 

[Lavey29]

I do both of those things currently. Probably could feed teef roids more often.

My phosphates are near zero but my nitrates are high. I carbon dose and want to keep my phosphate detectable without adding nitrate

I had to dose neophos for several months. With your volume slightly more then mine, 10ml daily would suffice easily.

 

[Randy Holmes-Farley Verified Community Expert]

Total water volume: 90gallons
Volume of solution: 1000ml
Volume of individual dose: 5ml
Ingredient: Monosodium Phosphate, .25tsp

That should raise my phosphate about .015ppm, yes?

I'm using the calculator from

James' Planted Tank - Dosing Calculator

With potassium phosphate, taking 77% of the result from that calculator (I believe I've read Dr. RHF say to do that)

Math is good. I get 0.017 before correction. Rounding errors are reduced by using 9 gallons and multiply the amount needed 10x.