The instructions are clear even if the dosing cup is rudimentary. I was warned to watch for over-suppresion of nitrates and phosphates. Red Sea requires weekly testing and dosing adjustments based on results and this had been provided a very soft, gradual transition into better numbers. Instructions state that there is no need for a GFO reactor but I have continued to run one and phosphates have been stable between 0.08 and 0.04. Skimmer is a must, and this is stated in the instruction; the sludge coming out of the skimmer is much darker and disgusting than before dosing. Back to measuring cup.... For the measured nitrates, the instructions stated that the tank needed three cc's per 25 gallons. The tank is a 43 gallon Red Sea Reefer which works out 5.16 mL's, but the measuring cup just ain't close to that good. Which makes me think that the dosing is probably good if its within 20%

By the smell it is clearly denatured alcohol, however, THIS STUFF WORKS. Had a spike in nitrates while I was on honeymoon to nearly 50. in about a month is is down to 5. Having an amazing Skimz skimmer helps too though.

This product works great I'm very happy with my purchase! But I would recommend dosing half of what it says to dose for your first use.

I received my nopox on Friday with a Redsea nitrate test kit today Sunday three days of use My nitrates are half off while they were on Friday

Works very well but in my case took almost 4 months for No3 to go from 35ppm to 3ppm
And Po4 0.00ppm

I've been using this for a couple of years now and I must say nothing gives me the peace of mind that my nitrates will be kept in check. I like to feed my fish and corals and have the freedom to do so with the help of Red Sea.

Was skeptical at first until I read some reviews and thought I would give it a try. In about a week was able to lower nitrates from 7 ppm to 0 and phosphate from .42 to 0. I was only going to use this product until my new lid came for my GFO reactor now considering using this full time!

I had a persistent difficulty getting nitrates under 5 ppm and SPS started dying and I had cyano problem. I nuked the cyano with chemiclean and started using nopox. AT 12 ml/day I was down to near zero nitrates in a few days (on a 200 gallon tank). I've dialed it into 8 ml/day now and that keeps nitrates at near zero and my coral is doing great.

No3Po4-X is an amazing product. For over 5 years I have constantly fought Nitrates and Phosphates. With this product I was able to get my Nitrates down from 20 to under 5 and my Phosphates from over .10 to under .02 in less than a week using Salifert to test. Maintenance dose is at 1ml a day on my 34g tank keeping nitrates stable at about 1ppm and phosphates undetectable with Salifert which im assuming is around .02 or so. Do not overdose this product. If you come back to your tank and you notice white film you have overdosed and need to cut the dose in half and test.

No3:Po4-X has become an essential item for my reef system. It allows me to feed my fish without the worry of high nitrates.

dont know about this, worked awesome on my 55 gal tank dosing 12ml a day kept my nitrates at 0, dosed 19 to 30 mils a day on my 125 gal tank nitrates never below 50 and had some clear slime clogging up everything

I have a BioCube 29, in operation successfully for over 4 years. I put every modification on it that it can accommodate: Hydor skimmer, InTank media tower, Innovative Marine bio-pellet reactor, Maxspect LEDs, upgraded Cobalt pump, etc. I have been successfully growing softies and some SPS. I have a montipora plate that has grown from quarter size to 8 inches in diameter. However, for all this time I have been fighting nitrates and phosphates. Nitrates have always been in the range of 12-16 ppm, and phosphates .06-.10. I've carbon dosed with Continuum Microfuel; tried two different brands of bio-pellets; tried several different brands of GFO; have been religious about weekly water changes (about 20%) and changing my Purigen pillow every two months. I finally decided to try NO3:PO4-X, and I'm glad I did! After one week my nitrates dropped to 4 ppm and my phosphates to .02. After the second week my nitrates are at 1 ppm and my phosphates are at 0. I followed the directions carefully. Resist the temptation to overdose. This stuff works where nothing else has, and I could not recommend it more highly.