Potassium nitrate to raise no3

[SBB Corals]

i have been doing tons of research and found this product

https://www.amazon.com/Science-Comp...coding=UTF8&psc=1&refRID=3MV2HRMAK94XKTHYHKJQ

is this what you guys would recommend for increasing no3?

 

[marlinmon]

Anything USP grade at least.

Why are you going to dose?

 

[SBB Corals]

Anything USP grade at least.

Why are you going to dose?

my sps corals are sucking up no3 like crazy.. i need to dose i am using neonitro at the moment and dosing 80ml per day to hold 8ppm no3 its become wasy to expensive so need a better option