will any freshwater phosphate additive be ok in saltwater?

[leedsrhinojohn]

I want to raise my phosphate, I have some phosphate additive which I use in my planted tanks, would this be ok to use in saltwater and would the amount to use be the same as it would be for freshwater?

 

[leedsrhinojohn]

anybody?????????

 

[leedsrhinojohn]

Found out the answer eventually, thanks for all the replies, its been most helpful