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crushed-coral-1-pound-810055291441-33838330249285
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Crushed Coral 1 Pound

$4.99
$4.99
Sold out

  • 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

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.

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.

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Customer Reviews

Based on 345 reviews
97%
(333)
3%
(9)
1%
(3)
0%
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r
ray c. (Queens, NY, US)

does a good job

D
D. E. (Buffalo, NY, US)
Crushed coral

I was looking for this product and what led me to aquarium co-op was the fair prices of everything I need for my fish tank. Good quality, fair price and fast deliver, all I could ask for.

C
Chelsea R. (The Bronx, NY, US)
I’ve used a whole bag on my 10 gallon tank

Ive used a whole bag on my 10 gallon tank which was chronically at 5.5 pH but once I used this it instantly brought my pH up to 7.5 within 24 hours. And after a few water changes and weeks it has been at 6.8-7.0 pH, highly recommend.

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W
William R. (Chicago, IL, US)
Great product

Perfect size bag for a small tank. Great stuff for buffering ph.

T
Tony K. (Mesa, AZ, US)
After one week changes starting registering

After one week of use, I have begun to see the buffer changes registering on the test strips.

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