Potassium Phosphate Dibasic dosing instead of sodium?

[Linlox]

Accidentally ordered potassium phosphate dibasic instead of sodium and decided to just use it since I had it. Any reason this may be a bad idea? Didn't think the small amount of potassium would be an issue and didn't see any threads about this.

Made a spreadsheet with calculations for dosing but my tank seems to either be consuming it quickly or my calculations are off, any help would be appreciated. The formulas from column B are pasted into D.

 

[Randy Holmes-Farley Verified Community Expert]

That will be ok. One generally does not want to boost potassium too much, but so little is added in this context that it is fine.

Phosphate often needs to be added much larger amounts than calculated due to binding of what you add to rock and sand.

 

[Linlox]

That will be ok. One generally does not want to boost potassium too much, but so little is added in this context that it is fine.

Phosphate often needs to be added much larger amounts than calculated due to binding of what you add to rock and sand.

Thanks Randy.

No sand and old rock, however this was a transfer from a seams failing tank to a stock tank 6 weeks ago and I suspect the coralline algae bloom that is starting to cover the new stock tank is sucking all the nutrients out of the water. Have been putting reef roids in and dosing the potassium phosphate but PO4 still crashes to 0 every couple days and dinos start to bloom. Might need to put this on a dosing pump for a while.