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crushed-coral-1-pound-810055291441-33838330249285
crushed-coral-1-pound-810055291441-33838330282053
crushed-coral-1-pound-810055291441-31666970361925
crushed-coral-1-pound-810055291441-31666970263621
crushed-coral-1-pound-810055291441-31465818521669
crushed-coral-1-pound-810055291441-31465818554437

Crushed Coral 1 Pound

$5.99
$5.99
Sold out

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  • Raises pH 
  • Increases KH to buffer pH
  • Adds some hardness to water

If you have softer water with low pH, KH, and GH and wish you could keep aquarium fish, shrimp, and snails that need higher pH, crushed coral is a gentle and safe way to buffer your water. Crushed coral dissolves continuously over time. The lower your pH is, the faster it dissolves. As the pH rises, it slows down how fast the coral dissolves. Crushed coral adds a bit of hardness to the water, and it significantly boosts KH which buffers pH from swinging.

Natures Ocean Additives Crushed Coral 1 Pound
1

Useful in Filters or Substrate

One of the easiest and safest ways to prevent harmful pH swings in your water is to increase the KH in your water by adding crushed coral to your aquarium. You can either use it as the substrate or pour a small amount into a filter media bag to use in your hang-in-back, canister, or other media-filled filter.

2

Rinse Before Using

Because this product is made by crushing coral, there may be some small particles or coral dust in the bag. Make sure to pour the crushed coral into a fish net and thoroughly rinse it under running water (with no soap) to prevent cloudy water in your aquarium.

crushed_coral_in_fish_net
Natures Ocean Additives Crushed Coral 1 Pound

Crushed Coral 1 Pound

$5.99
$5.99
Sold out

Customer Reviews

Based on 389 reviews
97%
(376)
2%
(9)
1%
(4)
0%
(0)
0%
(0)
E
E.D.

Crushed coral did what i bought it for to raise the ph in my shrimp tank. I put about 1/2 cup in 10 gallon tank and it raised ph from 7.2 to 7.5 pretty good! Aquarium co-op was very quick with delivery! Will be buying again when i run out!

J
Janice M. (Thomson, GA, US)
Crushed coral

Happy with purchase. Helps keep water stable. The shrimp and snails like it too 🦐🦐🦐🐌😁

A
Amanda (Cedar Rapids, IA, US)
Great for snails!

I use this stuff in my snail tanks and it helps keep their shells in great condition! Just make sure to rinse the substrate first though, or you'll get the powder in your tank.

J
Jeffery W. (Marshall, TX, US)

Crushed Coral 1 Pound

M
Matthew

Have not tried yet but have high hopes for good results

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Frequently Asked Questions

Shipping Policy

We process and ship out 98%+ of our shipments next business day. 

Live plants will ship using an appropriate service and typically arrive in 2 to 5 business days. Transit times do not include weekends, holidays, or weather delays. To avoid delays in the shipping network we recommend ordering live plants on Saturdays and Sundays for a Monday ship out.

Dry goods such as fish food, medication, filtration products, etc. can be ordered any day and will ship the next business day with an appropriate service. Typical shipping times are 1 to 7 business day transit time, depending on delivery location. 

Faster shipping options available at checkout for an additional charge.

Alaska and Hawaii have a $17.99 surcharge. We do not ship to Puerto Rico currently.

90 Day Return Policy

90 Day Return Policy

At Aquarium Co-Op, our goal is to have satisfied customers. We make every effort to inform our customers about how our products work, and what is 
to be expected. We recognize that sometimes a product may not completely
 meet the expectations of a customer. We take pride in having a 
no-hassle 90 day return policy. If you have purchased an item and are not 
satisfied, we will take it back.

To start a return, email our customer service team at shipping@aquariumcoop.com. Please note that the shipping cost of returning an item is not covered by Aquarium Co-Op.


Items being returned may be sent to:
Aquarium Co-Op
Shipping Team
800 Enterprise Dr.
Lexington, KY 40510 

Still Have Questions? Contact Us

Email: Shipping@aquariumcoop.com

Contact form: https://www.aquariumcoop.com/pages/contact-us

Visit our physical store:
Aquarium Co-Op
9661 Firdale Ave
Edmonds, Wa 98020

Send mail to our Warehouse:
Aquarium Co-Op Warehouse
800 Enterprise Drive
Lexington Ky, 40510