Need help with TriSodium mixing

[littlebeard]

Dino's has wiped out 80% of my corals after my nitrates and phosphates dropped to zero and they populated over everything...EVERYTHING. I had been raising my nutrients with neophosphate and neonitrate before and after however I've decided to make my own to keep costs down. I have a decent nitrate recipe however I need help with TriSodium phosphate mixture.

I am currently using food grade TriSodium phosphate. I don't have a scale that has the resolution of more than 1 gram so it has been difficult to find any decent instructions. I would like to measure it with measuring spoons to create a solution.

I would like to take my 500ml bottle add x amount of teaspoons and get a solution that when 10ml is dosed it will raise my 125 gallon tank roughly .01 ppm. My first attempt at this was a failure and the phosphates bottomed out again.

Is anyone able to help me please?

 

[Saltyreef]

Heres a thread that touches the subject.

Trisodium Phosphate dosing math

Trisodium Phosphate dosing math I haven’t seen much talk about phosphate dosing using Trisodium Phosphate. Say I want to make a solution so that I can raise my phosphates 0.01 PPM by adding 1ml solution in a 40 gallon tank. I’m using Na3PO4 99.9% https://www.ebay.com/itm/321926386899 I...

www.reef2reef.com

 

[ReneMiami]

I Mix 57ml of Na3PO4 into 1 gal of rodi water. I dont remember exactly how much that raises PO4. I have a 200g system and dose 3ml of the solution daily to keep PO4 around 0.07ppm.

 

[ReneMiami]

Heres a thread that touches the subject.

Trisodium Phosphate dosing math

Trisodium Phosphate dosing math I haven’t seen much talk about phosphate dosing using Trisodium Phosphate. Say I want to make a solution so that I can raise my phosphates 0.01 PPM by adding 1ml solution in a 40 gallon tank. I’m using Na3PO4 99.9% https://www.ebay.com/itm/321926386899 I...

www.reef2reef.com

I read that thread a few months ago and there were mistakes in the math done by the OP. Be careful with it.

 

[Randy Holmes-Farley Verified Community Expert]

Use this calculator and use the entry for phosphate from potassium phosphate. It will be off a little, but phosphate dosing is trial and error anyway since much of it gets bound to rock and sand.

James' Planted Tank - Dosing Calculator

 

[littlebeard]

hrm based on this I actually did it right but I'm not seeing results... I'm not seeing my phosphates raise and my last test reported 0 ppb phosphorous. I'm using a hanna ULR phosphorous colormeter and doing a conversion.

Any suggestions why this is happening? Dino's sucking in all the phosphates? Wrong test kit? Bad test kit? Other?

 

[Randy Holmes-Farley Verified Community Expert]

hrm based on this I actually did it right but I'm not seeing results... I'm not seeing my phosphates raise and my last test reported 0 ppb phosphorous. I'm using a hanna ULR phosphorous colormeter and doing a conversion.

Any suggestions why this is happening? Dino's sucking in all the phosphates? Wrong test kit? Bad test kit? Other?

That is normal.

When it is zero to start, a ton of it can get bound to rock and sand as you try to raise it.

If you believe the test kit, keep dosing about 0.02 ppm per day until you see it detectable.