SeachemPhosGuard 500ml

Excellent phosphate remover. I was having issues with green hair algae in my saltwater reef system. My test kits said I was at 0ppm on phosphate but the algae kept on growing, so I know there must have been some. I first tried granulated ferric oxide with no success. While I believe the GFO worked it wasn't correcting the issue with the GHA. I tried the GFO first because it is cheaper than the Seachem PhosGuard.After all the headaches with the GHA, I bit the bullet and purchased the PhosGuard. I like the pellet form. It provides excellent surface area to trap the phosphate. I also like the size of the pellet. It is being used in a media reactor and I don't have to worry about the pellets filtering though the screen and ending up in the aquarium. The best part is that this stuff works!! While I was already showing 0ppm I couldn't tell you how much phosphate it has removed, I can tell you that within two weeks the GHA had noticeably shrank back and eventually disappeared. I will continue to purchase this product in the future.I DID NOT receive this at a discount in exchange for review.

Phosphates dropped in a day

This stuff is fantastic. Turns out that our city water is high in silica and also has some phosphates in it. This was building up in our fish tanks and causing brown algae. We started putting this PhosGuard in the filters and within 2 weeks both silica and phosphates were at zero and the brown algae has stopped growing. I just add 1/4 cup of this inside the filters along with the charcoal. Now that we know the water was the cause, we will use filtered water from now on. I also purchased test kits for both phosphates and silica so I could watch the levels drop and test my house water. Now that the levels are to zero, I may not need to use this anymore since we will use filtered water to prevent the silica and phosphates from getting in the fish tank to begin with. But this stuff did the trick! If you have brown algae, then you need this to remove these things the algae feeds off of.As for the filter usage: our pump on our 55Gal tank has two large rectangular filters that the water flows thru like a waterfall. With those filters it is easy to add the PhosGuard. And we replace each of the filters once a week, on different days. We replace the left filter on Wednesdays and the replace the right filter on Saturdays.

Works at bringing my Phosphate down but be careful it will bring it down pretty fast

This product works as described, and I recommend it to others.I was having a phosphates problem for a while in my salt water tank at work because some of my macro algae had broken down in a spot I couldn't reach and was decaying there. I also, unbeknownst to me for a while, had an reverse osmosis/de-ionization filter system that wasn't pulling all the phosphates out of my top-off water. Bottom line, I was able to get the problem in better control using PhosGuard. That's good because the excess phosphates were really feeding some hair algae that had sprung up in my tank.The one thing that you have to note about this product is that it really needs to be in a place where it gets good water circulation over the media. I haven't had much luck in applications where there isn't much flow going directly over the PhosGuard.Other than that, I recommend this to others trying to keep phosphates under control.

Bought this for my 9 gallon fresh water planted tank that had recently developed a brown algae problem. I put it In a fine mesh bag and placed it in the filter, and algae growth has definitely slowed down considerably. I’ve had it in about a month now without changing the beads and phosphate tests are still showing near undetectable levels. Added some amano shrimp to the tank as well and we are definitely seeing improvement!If you are considering as a fix for brown algae growth I would definitely recommend this.

Works

I got this because I thought my Phosphates were high in my freshwater aquarium. I bought the API Phosphate test kit, used it and found that, indeed, I had high phosphates (2.0). I treated the water with Seachem PhosGuard and retook the test about four days later and then the phosphates we’re down and when I retook the test a few days later, levels are 0.0. I put it in a media bag inside the filter and it worked great. The test kit was easy to use and worked well too.