Red Sea NO3:PO4-X, Nitrate and Phosphate Reducer, 1 Liter

I've only been using this product for 6 days and have recorded measurable results. I've been battling green hair algae (GHA) in my 90 gallon tank (mostly fish with a few coral) for some time now. My nitrates have always hovered around 10ppm (I never measured phosphates until starting this product). I changed from IO Sea Salt to Seachem Reef Salt, and preformed frequent water changes (15 gallons weekly). In addition, I decreased feedings to the point I was all but starving my fish, and had limited success. After 6-8 weeks of 15 gallon weekly water changes accompanied by manual GHA removal, and starving my fish, my nitrates dropped to about 5ppm, and I did see some GHA starting to turn brown.When I started this product my nitrates were at 5ppm, and phosphates at .16ppm; so according to the directions I began dosing 8ml per day. After 3 days my nitrates dropped to 2ppm (didn't preform PO4 test), I preformed another 15 gallon water change, and following the instructions, I decreased my dose to 4ml per day. On day 5 my nitrates were 0ppm, and phosphates .08ppm. So now I'm dosing 2ml per day, and will reduce the frequency of my water changes to every two weeks. In addition, I will continue to adjust the NO3PO4x dose until I can maintain nitrates between 1-2ppm as recommended by Red Sea.During these 6 days, I have seen more of the GHA turning brown and beginning to dislodge from the live rock. I will update this review in a week or two with a report on the GHA battle.Also, I highly recommend using this product in conjunction with the "Red Sea Algae Control Multi NO3/PO4 Test Kit" to accurately measure your results.

I've used NoPox in my reef for the last 9 months, and I've now started using it in my large FOWLR aquarium as well. There are multiple ways to reduce nitrates in saltwater aquariums, but NoPox (which is basically just methanol and vinegar) makes it very easy.From my observations, I can tell you a few things. First, start slowly. Nothing good happens quickly in this hobby, and reducing nitrates is part of that. I always begin with a half daily dose for the first week, and scale up from there. That seems to reduce or eliminate the initial bacteria blooms, and if you're keeping sensitive corals it will prevent you from rapidly bottoming out your nitrate and shocking them.Second, although the product says you shouldn't use phosphate removers in conjunction with NoPox, I've always done so, with no problems. NoPox is highly effective at removing nitrates, but in my experience doesn't really touch phosphates. You can still use phosguard or GFO with this product.Lastly, make sure you have an efficient protein skimmer running 24/7, and give it 3-4 weeks (or more) before you decide it's not working for you. If you're going slowly, it'll take time to lower your nitrates, but NoPox will do so. Just remember to adjust (as in reduce) your daily dose as your nitrates fall below 5-10 ppm.

What I do like the mixture isn't straight vodka like others that can cause a bad bacteria bloom that kills some fish . But with any dosing keep your tank aerated. I lowers nitrates slowly and safely.

Use on constant basis

I have a 160-gallon mixed reef that has been established for more than 5 years. I have always had un-detectable levels of NO3 and Phosphates (tested with Salifert kits). Last few years, due to some circumstances I neglected my reef and my nitrates shot up-to 100ppm. Needless to say, my corals suffered, primarily due to uncontrollable cyanobacteria. Tried reducing my nutrients with a bigger skimmer, bio-pellet reactor, GFOs and more regular water changes. Even though I switched from frozen foods to just flake food for my fish, my nitrates (possibly phosphates) would not budge that much.About 20 days ago I started dosing about 15-mls of NoPox. As of today my Nitrates are little under 50ppm and dropping. Once It gets down below 25ppm, I will reduce the dosage to half so that I do not over-shoot the landing. So far I have not seen any negative effects on tank (fish or corals). If anything, my corals are looking healthier and more vibrant. I will post another update in few weeks. But as of right now, I am pleasantly surprised on how well this product as worked out. Currently dosing NoPox manually, but I do plan on adding it to my doser as part of my daily dosing schedule. Btw, first time in many years, my sandbed is sugary white again. I did take my bio-pellet reactor off-line before starting to use this product.

I don't know why some people are having trouble getting results from this product. Either they are overfeeding, under-maintaining their systems, or both. Do not think this product will eliminate NO3 if you do not have the proper environment! You must have an adequate sand bed, and an adequate amount of live rock. This is where de-nitrifying bacteria lives. Yes, some will grow in the water column, but will quickly be removed by the skimmer before it makes a dent in NO3 levels.I constantly had 5-10ppm of NO3 in my reef tank. Within a week of dosing, my NO3 dropped to .5ppm, and PO4 was .16-.36ppm. I cut dosage in half, and at the end of week two, my NO3 was still .5, and PO4 had dropped to .16. It takes longer to get PO4 down, so I am keeping the dosage the same until it's .5 or less. Dosing NPX has become part of my daily routine. If you own (and trust) a dosing machine, then you are set. I hand dose 5ml per day in my 125 through a tube into my RDSB in the basement. I haven't lost a single fish or invertebrate, and my refugium is teeming with life. I change 20% water once a month, but only to replace elements that corals use up.

I added 18ml per day for 4-5 days and it took my phosphate from .2 down to .04 and nitrate from 23 down to 8.4. I have a 120 gallon tank with about 30 more in my sump. Very effective.