Brightwell Aquatics Phosphat-E Liquid Phosphate Remover for Marine Fish and Reef Aquariums - Aquarium Water Treatments 4 2

I can’t stress enough how pleased I am with this product. Dosing is easy enough to understand and you don’t need to use much to get the job done. I like how it’s formulated to slowly reduce phosphate levels over a few days time, rather than cause a sudden drop and stress out the aquarium inhabitants. It will cause the water to get a little cloudy for a few hour but it does clear up. It’s a little expensive IMO but it definitely gets the job done. Just be sure to measure your dosage as accurately as possible to avoid pissing off your fish. Read more

works good, 1 ml per day in my waterbox 25 gal. went from .35 to .05 in 1 weeks time. Read more

I have a 300 gallon mixed reef and the phosphate level got away from me probably due to overfeeding. When I bought the Phosphat-E, the level tested with a Hanna Checker was 1.9 ppm. Having read so many excellent reviews and only a few negative ones, I felt that the overall product is good, but also decided to go slow just as the instructions state. It provides a maximum dose, but I saw absolutely no reason to take a chance since it saws its best to lower the phosphate level over 7-8 days. The simple math indicated a total (max) of 37.5 mls per day, but I started with 10 mls split into 3 doses, morning, midday and early evening. No negative results at all and the next day I couldn’t believe that some of the closed polyps were beginning to open back up. I increased the dose to 12 mls for the next 3 days and after 4 days, I tested and the level had dropped to .09. I again increased the dose to 16mls as the corals are looking so much better. The phosphate level at day 6 is now .06 and I am confident in following the “go slow” approach per the instructions. I should mention that I also cut down the feeding quantity and although fish will eat all day if you feed them, they are still happy. 😊 Overall great product, easy to use, and I highly recommend. Read more

This stuff might be great, I can’t tell yet, but I have a real issue with the dosing instructions. First, I understand the dose is based on the amount of desired phosphate reduction in a given volume of water. I get that. But you have to do the math to figure out the correct dose. “Each ml eliminates 1ppm phosphate in 4 gallons of water.” Ok, I have 40 net gallons of water in my tank and I want to reduce my phosphate by 0.2ppm. What’s my dose? I have to do math to figure that out. I don’t want to do math. I want to read a chart that did the math for me. Nope. They don’t provide one, not even on the web page. Still, I can do the math to figure out my dose. 1 ml will remove 1 ppm in 4 gallons of water. So... 1 ml will remove 0.5 ppm in 8 gallons 1 ml will remove 0.25 ppm in 16 gallons 1 ml will remove 0.125 ppm in 32 gallons 1 capful (5 ml) will remove 0.6 ppm in 32 gallons. Here’s where my dosing goes south on me. The directions on the bottle also say 5 ml will remove 1ppm in 40 gallons of water. How can 5ml remove .6 ppm in 32 gallons and 1.0 ppm in 40 gallons? If only that had a, what’s it called, oh yeah, A CHART! ***two treatments later*** I still don’t like the instructions and all my earlier complaints about determining the correct amount of liquid to use but...the stuff worked. Like, totally worked. According to my API phosphate test my levels have gone from >1.0 ppm to unmeasurable. Nothing’s died in the tank and I’m happy with the outcome. Read more

This is one powerful aquatic cleaner, one drop does it in my turtle tank. Read more

Good source to lower phosphates in saltwater tank Read more

Works wonders! Don't know how I went this long not using it. Brought phosphates down efficiently with harming fish and corals! Definitely recommend! Read more

Works Read more