NO3 Nitrate PO4 Phosphate Biological Remover Saltwater Freshwater Aquarium - 75G

Easy to use if you find you aren't seeing a reduction just increase the dosage slowly. Also make sure there is phosphates in your water or nothing will work.

Having high nitrates straight from my tap water, I wanted to to see if this would work before filling up fresh water in my aquarium. It did work, but only when I tried the double dosage instructed. Even then it only took my nitrate levels from 40ppm to 20ppm (which I understand is safe but less is better) but the main disappointment is the cloudiness from using it. Personal preference, I absolutely hate hazy/cloudy water so I have put this in the bin and will not be using it, unless in an emergency.

Did the job really quickly. Really good stuff. Don't need a lot so will last a while. Delivered quickly and in excellent condition

After several attempts at keeping alge down in my marine tank l tried this only for the powder mix to act like a plant food more than a plant killer over priced and disappointing

It's adding beneficial bacteria to feed on the nitrates and phosphates. It outcompetes algae. You'll also need to utilize water changes and or a skimmer, it's not a magic bullet. The negative comments on here are from people who don't understand what they're adding or why...