Ya, works as expected. On my previous tank I had a bad case of amphidinium dinoflagellates, I beleive from a combination of letting the po4 drop to nothing and starting with nothing but dry rock. I was going through a lot of NeoPhos and ended up finding some monosodium phosphate and mixing up my own for much, much cheaper. I didn't have to dose much of the NeoNitro to get back on track but worked as expected. If you have to dose it on a regular basis I would recommend getting some food grade sodium nitrate or potassium nitrate. Way cheaper than the aquarium branded products.