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...
Two Little Fishies

ReMag - Magnesium Media for Calcium Reactors

Be the first to review this product
Grouped product items
1kg ReMag - Magnesium Media for Calcium Reactors

SKU: 210073

In stock

$24.51 $24.51

- +
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

ReMag is made up of soluble and extremely pure granules that are very rich in magnesium. Two Little Fishies Remag will help replenish magnesium when used in conjunction with a calcium reactor which makes it a perfect option for maintaining Magnesium in the reef aquarium.

  • Maintains magnesium
  • Highly soluble
  • Does not disturb chloride or sulfate ionic balance
  • Large particle size (5-10mm) increases efficiency (Actual media size may vary)

 

If you are using a calcium reactor on your reef tank, adding a magnesium media will help keep levels balanced when the effluent is returned back to the aquarium. All aragonite based calcium reactor media will be low in magnesium and will need to be replenished and maintained for a healthy, successful reef tank. By adding ReMag to your calcium reactor you can effectively maintain, calcium, alkalinity, and magnesium in balanced proportions.

 

We suggest keeping magnesium levels in the range of 1200 ppm - 1400 ppm. Magnesium media in a calcium reactors is one of the easiest way to maintain magnesium, however it is not all that great at elevating it. If you find that you need to boost your magnesium levels we highly suggest using a stand alone magnesium supplement to do so. Once your magnesium levels, in the tank, are where you want them ReMag can be implemented to keep it stable.

 

Note: We suggest using 10% Two Little Fishies ReMag with 90% of any other aragonite calcium reactor media by volume. Do not exceed 25% ReMag in calcium reactors.

 

Directions:

  • Rinse ReMag media under tap water until all fines are removed.
  • Add ReMag to any calcium reactor at a ratio of 10% remag to 90% aragonite reactor media by volume.
  • Monitor magnesium levels in the aquarium for the next couple weeks. If you see magnesium levels are slowly dropping, simply increase the amount of ReMag in the reactor.
  • Replenish ReMag in the calcium reactor as needed

 

 

 

 

More Information
More Information
SKU ReMag-Magnesium-Media-for-Calcium-Reactors-Two-LIttle-Fishies
Aquarium Type Saltwater
Reviews 1
Write Your Own Review
You're reviewing:ReMag - Magnesium Media for Calcium Reactors
Your Rating
Product Questions

Product Questions

No questions yet. Be the first to ask the question!

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
Anubias Barteri 'Butterfly' on Driftwood - Live Freshwater Plant
AquaZen
Anubias Barteri 'Butterfly' on Driftwood - Live Freshwater Plant
$26.99 $26.99

BRS Fresh Hat
Bulk Reef Supply
BRS Fresh Hat
$24.99 $24.99

Betta World - Mini Lava Rock (1lb)
Aqua Natural
Betta World - Mini Lava Rock (1lb)
$7.48 $7.48

Betta World - Rose Cream Substrate (1lb)
Aqua Natural
Betta World - Rose Cream Substrate (1lb)
$7.48 $7.48

Betta World - Purple Diamond Substrate (1lb)
Aqua Natural
Betta World - Purple Diamond Substrate (1lb)
$7.48 $7.48

Blue/Black Aquarium Backgrounds
SeaView
Blue/Black Aquarium Backgrounds
From: $6.99

Choose Options
Diamond Black Bio-Substrate (5lbs)
Aqua Natural
Diamond Black Bio-Substrate (5lbs)
$12.99 $12.99

Betta World - Diamond Black Substrate (1lb)
Aqua Natural
Betta World - Diamond Black Substrate (1lb)
$7.48 $7.48

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

Cholla Wood
Liquid Gardens
Cholla Wood
From: $3.00

Choose Options

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