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Home » Saltwater Aquarium Supplies  » Filter Media  » Chemical  » Phosphate Removers  »  D-D RP-10 ROWAphos GFO Phosphate Removal Media
D-D RP-10 ROWAphos GFO Phosphate Removal Media

D-D RP-10 ROWAphos GFO Phosphate Removal Media

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D-D RP-10 ROWAphos GFO Phosphate Removal Media Information

ROWAphos is the professional method of removing Phosphate and Silicate in all types of Aquariums and Ponds. It has the largest absorption ability of any phosphate product and will not leach back in to the water.

ROWAphos is the most effective phosphate remover on the market today. It is widely used in Europe and is now finding success in the United States. ROWAphos was developed in Germany to reduce Phosphates in the Main Water Supply. It is being used in lakes and ponds and has been refined for the Aquarium Market. ROWAphos will not only remove phosphates but will never release them back into the system.

It has the largest absorption ability of any phosphate product in the market today. This saves the need for immediate removal once the media is full. The product is easy to use and will improve the water quality wherever Phosphate or Silicate is a problem. It is of interest to Marine and Reef Aquariums where its unrivalled capabilities have shown it to be extremely beneficial in the control of nuisance algae’s and the growth of hard corals. Unlike other phosphate removal products, it does not shock the animals or cause problems when used regularly. In fact constant use of the product is recommended, as its abilities to control nuisance algae is a major benefit.
  • Extremely high binding capacity
  • Needs very little room in the filter system
  • Simple Handling (filter bag included)
  • No influence on pH
  • Does not release toxic substances back into the aquarium when exhausted
  • 100ml of RowaPhos will lower the phosphate level by 1ppm in a 50 gallon salt water tank (or a 170 gallon freshwater tank).
Removes 12G of phosphate per kg of media:

100mL - Removes 1ppm phosphate from 630 gallons of freshwater and 315 gallons of salt water
250mL - Removes 1ppm phosphate from 1580 gallons of freshwater and 790 gallons of salt water
500mL - Removes 1ppm phosphate from 3160 gallons of freshwater and 1580 gallons of salt water

*Works great in a canister filter or with TwoLittleFishie`s Phosban Reactor or Kent Marine`s Phos Reactor.

Tips for Use:

To obtain the best results from RowaPhos and to keep your tank at zero phosphate levels it is important when starting up a new tank or a tank with phosphate levels in that has matured, to use RowaPhos on a permanent basis.

RowaPhos will absorb phosphate, silicates and arsenic. It is entirely safe in both fresh and saltwater systems. It does not release, when exhausted, any chemicals back into the water. ie phosphate, silicates or arsenic.

It is currently being used on a saltwater fish tank and has been for the last four years with five times the recommended requirement and it is only changed when phosphate levels coming out of the canister, where it is placed, begin to rise after approximately six to seven months.

How to use:

  • It must be kept damp at all times. It is not effective if it dries out.
  • Unused ROWAphos should be kept sealed in it`s original container until required
  • Place between two layers of wool in the filter canister
  • Do not sprinkle into the aquarium
  • Do not place in the filter without using the filter sock or surrounding it with wool
  • Change the ROWAphos when a rise in phosphate levels is indicated
  • When placed in the canister it is possible to measure zero phosphate leaving the canister, the flow should be turned down until that is achieved
  • For a short time the aquarium water may turn slightly brown in color, because of flushing out some fine material. This is not harmful to fish or other organisms, and will disappear after a short period of time.


Unfortunately, most phosphate test kits available are not capable of reading low levels of phosphate. It is necessary in a saltwater fish tank to always keep your levels below 0.015ppm

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D-D RP-10 ROWAphos GFO Phosphate Removal Media Reviews

Average Rating
(112 reviews)
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of 12

Best phosphate remover

Reviewers Rating Excellent!

Posted: 3/11/2014 from GOODYEAR, AZ UNITED STATES
5.0 5
Experience Level: Expert

Comments: A little on the expensive side but lasts twice as long as GFO. A little goes a long way. I have used everything from brs GFO to phosgaurd and this is the best.

1 of 1 People found this review helpful, did you? Yes No


Reviewers Rating Excellent!

Posted: 2/6/2014 from PORTLAND, OR UNITED STATES
5.0 5
Experience Level: Expert

Comments: one of the best media on the market going around to date to reduce phosphate without impacting any water parameters

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The Best

Reviewers Rating Excellent!

Posted: 12/31/2013 from Medley, FL UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: I've tried them all, this gives me the best fluidized bed reactor performance of all.

Did you find this review helpful? Yes No


Reviewers Rating Excellent!

Posted: 12/25/2013 from AUBURN, MA UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: Love it when a product does what it says it is supposed to do. Little pricey, but so are the inhabitants in the tank. So well worth it to me.

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Reviewers Rating Excellent!

Posted: 11/12/2013 from MIAMI, FL UNITED STATES
4.5 5
Experience Level: Intermediate

Comments: Hi everybody !after couple of years using this product I can confirm that it is an excellent Phos removal.

1 of 1 People found this review helpful, did you? Yes No

Rowa phos

Reviewers Rating Great

Posted: 10/12/2013 from COVINA, CA UNITED STATES
4.0 5
Experience Level: Expert

Comments: I've used a lot of different brands and grades of phosphate removers rowa is one of the top choices for me it reduces phosphates quickly and. Has a good good hold Compacity ... The only thing I don't like about it is it seems to have more really fine grains then other brands And a little more difficult to rinse

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Rowa Phos

Reviewers Rating Excellent!

Posted: 9/25/2013 from MELROSE, MA UNITED STATES
5.0 5
Experience Level: Intermediate


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The Best rust ever!

Reviewers Rating Excellent!

Posted: 9/24/2013 from Gilroy, CA UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: After allowing my PO4 to climb higher than I should have, 0.23ppm (Hanna Checker) I needed more reduction than my refugium could handle. I bought ROWAphos and ran it in a TLF Phosban reactor 150 on my 180gal mixed reef. After one week I was not impressed with my tests showing minimal improvement. I changed out the 250ml of media to a fresh batch and retested on a daily basis...WOW! This product is incredible! 0.02ppm after three weeks! Make sure to test at the same time each day and make sure to run tests BEFORE you feed your fish or corals as your foods will spike your results. Rinse rinse and extra rinse! Good luck 5* product

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Reviewers Rating Unsatisfactory

Posted: 8/2/2013 from Edinburg, VA UNITED STATES
0.5 5
Experience Level: Expert

Comments: Media ok next reef reactor is junk came in missing parts and defective no quality control

0 of 11 People found this review helpful, did you? Yes No

Got Phosphate? Rowaphos is 4 U

Reviewers Rating Excellent!

Posted: 7/12/2013 from SOUTHAMPTON, NJ UNITED STATES
5.0 5
Experience Level: Intermediate

Comments: My phosphate was well over 3 on salifert test kit and I know that is not healthy for my 4 year old reef system. Although I have mostly LPS, fish, inverts and an anemone, I do have a few SPS frags that are not happy in this environment. I have used other GFO that just was not doing the job. It has been a little less than two weeks and already my phosphate has dropped to 1. I purposely did not want to shock my system, but rather go a slow gradual drop. That is exactly what is happening and for the first time in a while my front glass is a lot cleaner as well. I am using rowaphos in a reactor. Make sure you read the directions on the amount to use for your size tank as well as rinsing well in ro/di water if you place it in a reactor. It is a powerful product, so don't over do it thinking more is good. If I have learned one thing from this hobby it is the need for patience with making any changes in parameters. This is one product I intend to use on a permanent basis.

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of 12
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