loading spinner

Shop and Search

Quick Product Search

Build Your Frag Pack learn more

Product Categories

Newsletter Signup

Sign up for the official Detroit Reef Club newsletter

Our newsletter is the best way to stay up to date with all things Detroit Reef Club.

  • Announcements about new imports.
  • New arrivals before they are posted online.
  • Tips, tricks, and special care articles.
  • Upcoming specials or sales.
* indicates required

Build Your Frag Pack

$19 (1)

Available Discounts
Active Discounts

You have not yet qualified for any "$19" discounts

$19 Frags (53)

A collection of frags grown in our $19 Frag Tank at the Farm.

Available Discounts
  • Purchase 5 or more "$19 Frags" to receive $4.00 off each item
  • Purchase 10 or more "$19 Frags" to receive $6.50 off each item
Active Discounts

You have not yet qualified for any "$19 Frags" discounts

$39 Frags (74)

A collection of frags grown in our $39 Frag Tank at the Farm.

Available Discounts
  • Purchase 3 or more "$39 Frags" to receive $6.00 off each item
  • Purchase 6 or more "$39 Frags" to receive $10.00 off each item
Active Discounts

You have not yet qualified for any "$39 Frags" discounts

$59 Frags (49)

A collection of frags grown in our $59 Frag Tank at the Farm.

Available Discounts
  • Purchase 3 or more "$59 Frags" to receive $9.00 off each item
  • Purchase 6 or more "$59 Frags" to receive $15.00 off each item
Active Discounts

You have not yet qualified for any "$59 Frags" discounts

Aussie LPS Bundle & Save (34)

We're adding a Ton of Killer Aussie LPS to Website. Bundle & Save!

Available Discounts
  • Purchase 3 or more "Aussie LPS Bundle & Save" to receive 10% off each item
  • Purchase 6 or more "Aussie LPS Bundle & Save" to receive 15% off each item
  • Purchase 10 or more "Aussie LPS Bundle & Save" to receive 20% off each item
  • Purchase 15 or more "Aussie LPS Bundle & Save" to receive 25% off each item
Active Discounts

You have not yet qualified for any "Aussie LPS Bundle & Save" discounts

Bundle & Save Fish/Inverts (28)

Bundle and Save on these Fish & Inverts! Buy 3 for a 10% discount on all of them, or Buy 5 for 20% Off!

Available Discounts
  • Purchase 3 or more "Bundle & Save Fish/Inverts" to receive 10% off each item
  • Purchase 5 or more "Bundle & Save Fish/Inverts" to receive 20% off each item
Active Discounts

You have not yet qualified for any "Bundle & Save Fish/Inverts" discounts

Using GFO – When & How

Side Menu
Close

GFO or "Granulated Ferric Oxide" is an extremely efficient method of removing Phosphates from your water column, as well as many other metals.

GFO or UC GFO?

Ultra Capacity Granulated Ferric Oxide is more expensive, but has a greater ability to absorb Phosphates than regular capacity and doesn't leach Phosphates back into the water column once at capacity as much as the regular capacity.

We usually use regular capacity when removing Copper or polish water after some kind of treatment, where we plan to discard the media after, or if you're just using it very short term, or occasionally as needed when levels creep up a bit, and you don't want to save the media between uses, Regular Capacity makes sense. Any application where continued use is the plan, we highly recommend Ultra Capacity.

How to implement?

Baffles/Zipper Bags:

While you certainly can use GFO this way, it should be noted this is an extremely ineffective and inconsistent method of use. For fine tuning this will not work well. The rate and way that the water flows through the GFO has a huge impact on the effectiveness of the media, so as the bag moves around a bit in the baffle and flows differently through the bag, you will see swings in how it works.

Media Chamber:

The Preferred Method for using GFO consistently and efficiently is to have it continuously tumbling in a Media Chamber. We recommend a Bashsea Media Chamber with the corresponding recommended Sicce Pump - not just a pump chosen because you happen to have it. The rate of flow through the chamber is crucial and these chambers are specifically designed for the Sicce Pumps.

WARNING! Never Combine GFO & Carbon together, as this will release unwanted toxins into your water column!

How much to use?

This depends Greatly system to system.

  • Once beginning use for the first time, test frequently to see the affects of the dose to make sure you're not going below 0.03.
  • We recommend an ideal range of 0.03-0.09.
  • We highly recommend measuring your dose based on weight, so that when you change your media you can replace with the same amount (or alter based on the results from the first run).

Below is a chart with recommended starting amounts based on general ranges.

Phosphates Low (0.11-0.30) Med (0.31-0.74) High (0.75+)
10-25 Gallons 25g 50g 75g
25-50 Gallons 50g 100g 150g
50-90 Gallons 100g 150g 200g
90-150 Gallons 150g 300g 500g
150-300 Gallons 200g 400g 800g