The store will not work correctly in the case when cookies are disabled.
Bulk Reef Supply Saltwater Logo
Bulk Reef Supply Freshwater Logo

FREE Shipping Over $49

Free Shipping

Orders Over $49 Ship Free

$5.99 economy shipping on orders under $49

Learn More
| Earn Reward Points
Skip to Content
Menu BRS Freshwater
My Cart
    • My Account
    • My Wish List
    • My Orders
    • Address Book
    • Sign Out
    • Reward Points
  • Sign In
Bulk Reef Supply Mobile Menu
Close

Quick Links

  • Deals
  • Gift Cards
  • What's New
  • Education
  • Clearance
  • Open Box
  • PR Rewards
  • Shop Brands
  • FAQs
  • Saltwater
Menu
Fast Shipping Fast Shipping
Sign up to be a Reward Member Earn Reward Points
Returns 365-Day Returns
Experts Aquarium Experts
  • Fast Shipping Fast Shipping
  • Sign up to be a Reward Member Earn Reward Points
  • Returns Risk-Free 365 Day Returns
  • Experts Aquarium Experts
Loading...
D-D The Aquarium Solution Ltd

RowaPhos Phosphate Remover

Be the first to review this product
Grouped product items
100 mL RowaPhos

SKU: 207797

In stock

$14.99 $14.99

- +
250 mL RowaPhos

SKU: 207798

In stock

$21.99 $21.99

- +
500 mL RowaPhos

SKU: 207799

In stock

$32.99 $32.99

- +
1000 mL RowaPhos

SKU: 207800

In stock

$49.99 $49.99

- +
5 L RowaPhos

SKU: 207801

In stock

$169.99 $169.99

- +
Add to Wish List
Risk Free 365 Returns

Your Satisfaction Guaranteed With
365 Day Risk Free Returns

No longer need what you ordered? Ordered one too many? We've got your back.


Return new, unopened products in original packaging within 365 days for a full refund.

Under 60 days? No problem. We’ll issue your refund to the original form of payment. Over 60 days? Still no problem. We'll issue your refund in the form of store credit, which you can use like cash on our website.


Return unused, open box products within 30 days.

Open box but still unused? We can help. We’ll issue your refund to the original form of payment minus a small 10% restocking and handling fee.

Some exclusions apply, for more information go to Return & Replacement Details.

Skip to the end of the images gallery
main product photo
Skip to the beginning of the images gallery
Details

Remove phosphates from your reef tank with patented, man-made ferric hydroxide from RowaPhos. Phosphate removal in a reef tank is important because nuisance algae is fed by phosphates. This algae can overrun your expensive corals spoiling the aesthetics of the tank. Additionally, high phosphate levels can reduce the growth of coral skeletons.

  • Significant adsorption ability - 25 g of phosphate per kg of media
  • Once exhausted, will not leak back into the water
  • Easy to use and will improve the water quality by removing Phosphate

 

RowaPhos was developed in Germany for treating main water supplies. RowaPhos is a patented, man made ferric hydroxide material chemically engineered for the efficient removal of phosphates, arsenic and silicates from fresh and saltwater.

  • 100 g/100 mL RowaPhos will remove 3ppm of phosphate from 100 US gallons of saltwater.
  • 250 g/250 mL RowaPhos will remove 3ppm of phosphate from 250 US gallons of saltwater.
  • 500 g/500 mL RowaPhos will remove 3 ppm of phosphate from 500 US gallons of saltwater.
  • 1000g/ 1 L RowaPhos will remove 3 ppm of phosphate from 1000 US gallons of saltwater.
  • 5 kg/5 L RowaPhos will remove 3 ppm of phosphate from 4500 US gallons of saltwater.

 

RowaPhos Recommendation for Use

  • Never wash the product unless fluidising.
  • It must be kept damp at all times, it is not as effective if it dries out therefore, replace the lid if not using all of the container.
  • Place the product between two layers of filter wool in a canister filter.
  • Do not sprinkle into the your reef tank.
  • Do not place it into water without surrounding it with filter wool
  • RowaPhos recommends that you use a small quantity and replace regularly rather than a large amount and replace infrequently.

 

More Information
More Information
SKU RowaPhos Phosphate Remover
Aquarium Type Saltwater
Reviews 21
Write Your Own Review
You're reviewing:RowaPhos Phosphate Remover
Your Rating
Product Questions

Product Questions

Can this be used in the carbon chamber of a Fluval G3?
Question by: David Woodruff on Feb 5, 2023, 8:29 AM
0
Thanks for reaching out! GFO does best in a reactor but if wanting to, you can put it in a mesh media bag with carbon and run it that way!
Answer by: James Johnson (BRS Staff) on Feb 17, 2023, 1:34 PM
0
Can this be mixed with carbon in a media reactor?
Question by: Angelica on May 26, 2017, 7:28 AM
0
Hey there,
It can be mixed with your choice of carbon in a media reactor. More than likely the carbon will become exhausted before the Rowaphos does, and you may not want to use a whole dose of Rowaphos since you may need to change it more often.
Answer by: Charlie on May 26, 2017, 2:48 PM
0
Does this product also remove nitrates ?
Question by: Billy A on May 30, 2016, 8:30 AM
0
I'm going to be using this in a felt filter sock. What micron size would keep the product from getting through? And would it be ok to put it in the same sock that my overflow runs into, or should it be separate? I currently use a 200 micron 4x14 INSIDE of a 100 micron 7x16 drawstring setup, as it's a custom made sump. So there would be no issues of it flowing out the top of the socks. FOWLR, but keep Chaeto in the sump as well.
Question by: Jesse Donnelly on Apr 7, 2016, 4:43 PM
0
Great question!
This can work with standard media bags 500 micron and even higher without issue. It can work and not escape in a felt bag perfectly. Ideally GFO should tumble for best performance. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 7, 2016, 10:10 PM
0
Hi how much Rowa do I put in reactor ? 265 gallon tank and with 75 gallon sump level is at 5 ppm
Thanks ,Thomas
Question by: Thomas barrett on Mar 31, 2016, 8:50 PM
0
Great question!
This will use around 300 mL of Rowaphos. Feel free to let us know if you have any further questions!
Answer by: Connor on Apr 1, 2016, 3:29 PM
0
Does this come in a bag of some kind?
Question by: Kathy on Feb 7, 2014, 11:02 AM
0
HI Kathy,
It comes in a small plastic container. Its best run in a fluidized bed reactor or at the very least you would want to put it in a filter sock.
Answer by: Bulk Reef Supply on Feb 7, 2014, 11:02 AM
0
hi i just started using this product seems like pretty good stuff, i am measuring 0.07 is that considered good enough, i only keeping fish and soft corals, if i keep using it will it go down to zero eventually, also how much should i use for a 30 gallon tank instructions are a little vague, and when would you reccomend changing it out every 2 weeks?? do hard corals need absolute zero phosphate to survive? thanks for your help..
Question by: VAL on Feb 6, 2014, 3:05 AM
1
Hi Val,
Keep using it and let it go as low as it can. Phosphates usually aren't limiting to micro algae until they get below .03, so that is generally the target number but even lower is better as phosphates have other negative side effects such as slowing coral skeleton growth, though in most cases the phosphate itself isn't toxic so much as it has a lot of undesirable side effects (like being algae food).
Answer by: Bulk Reef Supply on Feb 6, 2014, 3:05 AM
0

SIGN UP FOR THE BULK REEF SUPPLY NEWSLETTER

Don’t be the last to know this holiday season about sales, specials, new products, and more!

Sign Up Now
BRS Fresh https://media2.cdn.bulkreefsupply.com/media/logo/stores/1/BRS-Logo-498x174.png https://fresh.bulkreefsupply.com/
BRS Fresh Bulk Reef Supply
  • Facebook Opens a new window
  • Youtube Opens a new window
  • Instagram Opens a new window
  • TikTok Opens a new window

Contact

  • 763-432-9691

  • 8am - 6pm CT M-Th
    9am - 4pm CT Friday
  • support@bulkreefsupply.com
  • 6325 Sandburg Road, Suite 200
    Golden Valley, MN 55427 US

Bulk Reef Supply
About Us
Customer Service
Careers
Wholesale Customers
Instructions
Terms & Conditions
Customer Center
Preferred Reefer Program
International Shipping
Returns & Replacements
Payment, Pricing & Promos
Shipping & Delivery
APL Star Logo
© 2025 Aperture Pet & Life. All Rights Reserved.
Privacy Policy

item(s) Added to Your Cart

Product Name

View Cart Checkout Now
You may also like
Stainless Steel Curved Spring Scissors
Ultum Nature Systems
Stainless Steel Curved Spring Scissors
From: $29.99

Choose Options
PE Pellets Community Fish Food 1mm (4oz)
Piscine Energetics
PE Pellets Community Fish Food 1mm (4oz)
$9.99 $9.99

Ammonia Alert - Continuous Ammonia Sensor
Seachem
Ammonia Alert - Continuous Ammonia Sensor
Rating:
60%
1 Review
$8.26 $8.26

Delta Sand Bio-Substrate (5lbs)
Aqua Natural
Delta Sand Bio-Substrate (5lbs)
$12.99 $12.99

Anubias Nana on Lava Stone - Live Freshwater Plant
AquaZen
Anubias Nana on Lava Stone - Live Freshwater Plant
$24.95 $24.95

Seascape/Natural Mystic Aquarium Backgrounds
SeaView
Seascape/Natural Mystic Aquarium Backgrounds
From: $9.99

Choose Options
Spider Wood / Cuckoo Root (6-12 Inches)
Lifegard Aquatics
Spider Wood / Cuckoo Root (6-12 Inches)
Rating:
100%
2 Reviews
$9.88 $9.88

Aquarium Water Mini Test Kit
NT Labs
Aquarium Water Mini Test Kit
$22.85 $22.85

Amazon Wood
Ultum Nature Systems
Amazon Wood
From: $9.99

Choose Options
African Cichlid Mix - Ivory Coast Sand 20lbs
CaribSea
African Cichlid Mix - Ivory Coast Sand 20lbs
$15.40 $15.40

Login and Registration Form

  • Login
  • Register

Registered Customers
If you have an account, sign in with your email address.
Forgot Your Password?
or

Login with Your Social Profile Login with
Continue with Google
Continue with Facebook
Continue with Apple

Personal Information
Sign-in Information
Password Strength: No Password
Back
or

Login with Your Social Profile Login with
Continue with Google
Continue with Facebook
Continue with Apple
  • Forgot Your Password?

Please enter your email address below to receive a password reset link.
Go back