D-D RP-50 ROWAphos Phosphate Removal Media - 500 ml/16.9 oz

Good product, reduces phosphate

This is by far the best phosphate removal on the market. Cleans really fast when rinsed seems to work longer at keeping phosphates down longer than other brands. Recommend to all!

Best product to reduce phosphates are control Algae

Funciona reduce al máximo el alga marrón del acuario.

I used to run BRS GFO, but decided I would give ROWAphos a chance based on some recommendations. First thing I have to get out of the way... Do not believe the hype about not having to rinse this media. You absolutely have to rinse the media. This isn't a knock against the product, just dispelling some bad information that is floating around. With that out of the way, the product works well. My one complaint is with regard to grain size. It is a little smaller overall than the high capacity BRS. This proved problematic in my Innovative Marine reactor, but some adjustment and addition of finer foam pads resolved the issue. Checking for phosphate without a photocolorometer is generally always going to show 0ppm if phosphate is low, using a Hana or other meter will give an accurate reading when calibrated properly. My LFS provides this service and I've seen a healthy reduction in the past month with 2 cycles of ROWAphos.

If you know what it's for and want to improve your tank then give it a try cheap reliable and affordable enough

I have multiple issues with this product. I used it based on the recommendation of Triton after sending in a water sample for ICP testing. I used an entire 250g container in a 40g breeder - total of 55 gal including sump. I put it in a media reactor and measured PO4 in both tank and media reactor outlet. After 3 days there was only a slight reduction of PO4. My PO4 was pretty high at 0.34ppm using a ULR Hanna meter. The best I could get after 4 days was 0.23ppm. I switched back to SeaChem Phosgaurd. Starting at the 0.23ppm @ 8:42am, by 8:35am the next day it was down to 0.15ppm, 2 days after that down to 0.05 and 2 more days at 0.03ppm. I tested multiple times from the tank and from the media reactor outlet. Second problem - this stuff is messy. I could not get it to stay in the bag that was supplied with the package. I rinsed a lot down the drain. After I took it out of my reactor, I let it dry out (in the supplied bag still). Once it was dry, I could shake the bag and dust would drop out. I shook it for about 30 shakes and had enough dust come out that I was unwilling to wash it down the drain and used a paper towel to scoop it up and throw it in the trash can. I would not recommend this to a friend, and I will never use it again myself.

Simply hands down the best phosphate remover on the market, and I have tried many others! Rowaphos removes phosphates quickly and keeps them out of your tank on average for me about 3 times longer than any other products I have used. What is really good about it is once the rowaphos has soaked up all the phosphates on your tank it doesn't release them back into the water like other products do. If you haven't used this product yet, don't hesitate it's well worth the money!