I use a Hanna ULR Phosphorous checker in my marine tank -12 days ago it was giving 175 ppb ie 0.54 ppm phosphate), yesterday, it was down to 0.35ppb ie 0.11 ppm of phosphate). This was achieved dosing just 50ml of Quantum Phosphate remover (450l aquarium).
Works very well. Maybe too well. Nitrates were at around 40 and even with the Low Range nitrate remover, it removed the nitrates quickly. Using every other day and testing in between, it brought it down to 10 within a week. So note to self, use less often because it does work.
Ive just gone over the quantum products I now use the whole range.. I will be using the salt to at some point to.. all these products are at a new level for reef keeping… it’s easy and simple to use my corals are growing and popping within a week of using it’s just amazing how these products change corals !! One word brilliant