Trisodium Phosphate compatibility in two part?

[Cory]

I want to know if i can combine trisodium phosphate to the sodium bicarbonate part of Randys two part recipie and deliver phosphate along with my alkalinity dosing.

Reason is po4 is zero in my tank on hanna nearly always. Id like to add the ideal po4 along with the sodium bicarbonate solution. Does anyone know how much i can put in it also if they can be combined? Is there a way to know for each dkh ideally .1ppm po4 in the mix, or something like this?

 

[Randy Holmes-Farley Verified Community Expert]

Yes, alk part only.

 

[Cory]

Thanks Randy. How much would you put in?

 

[Randy Holmes-Farley Verified Community Expert]

You’d have to determine how much of each you want each day to know that.

 

[Cory]

Would it be good if i delivered .03 ppm po4 with every 2 dkh delivered? 200 gallon tank. I just dont want it to be limiting as i dose alk.

 

[Cory]

Please help with this.

 

[B-ridge]

Following.
I have the same issues with phosphate. Always 0. Would like to get po4 to at least 0.03-0.05. Guess I could always feed more. I only feed 2-4 cubes a day on a 240 gallon reef tank with 10 fish

 

[Cory]

I would just like to have for every dkh of alk delivered to have .01ppm po4 delivered

 

[Randy Holmes-Farley Verified Community Expert]

Would it be good if i delivered .03 ppm po4 with every 2 dkh delivered? 200 gallon tank. I just dont want it to be limiting as i dose alk.

I think the only way to know what level is desirable is to pick a level and try it to see where phosphate stabilizes.

 

[Cory]

Maybe its better not to mix them so i have more control over the dose.

If i added 25 grams of trisodium phosphate to your alkalinity part, how much is delivered per dkh?