Dosing Phosphates?

[Kasey Grohowski]

So I've read that you need some phophates for a biopellet reactor to actually work. My phosphates are undetectable and nitrates are 20ish. I was planning on dosing to .03 ppm. Anyone have any advice on the best way to do this? Thank you.

 

[Randy Holmes-Farley Verified Community Expert]

That seems like a fine plan. I’d buy some sort of sodium or potassium phosphate, preferably food grades or ACS reagent grade.

 

[bdare]

Hello @Randy Holmes-Farley,

Where do folks source phosphate for dosing? I'm assuming it comes in some soft of powder form?

Sorry for the hijack.

Thanks,
Ben

 

[PatW]

I use trisodium phosphate ACS reagent grade from Amazon. I take 2 tablespoons of crystals and dissolve it into 1 gallon of RODI. I dose about .5 to 2 tablespoons per day in a 300 gallon tank. There are about 15 ml per tablespoon. I keep my tank at about .03 ppm.

 

[dwest]

I use this