Crushed Coral 1 Pound

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  • Raises pH
  • Increases KH to Buffer pH
  • Adds Some Hardness to Water

Crushed coral is a great tool for raising the pH of your water. We use it at 1 pound of crushed coral per 10 gallons of water when mixed in with our gravel. 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.

Customer Reviews

Based on 307 reviews
Lisa (Raleigh, NC, US)
Best crushed coral I’ve found

This is the best crushed coral in my opinion bc there’s very little dust. When I do to rinse it in an old mesh net, I only lose a tiny bit of powered dust. This is the best you can buy.

Ryan M. (Fairfax, VA, US)
Crushed Coral

Added for shrimp and snails.

Ryan F. (Columbus, OH, US)

It’s crushed. It’s coral. Exactly what i needed

Paul H. (Boynton Beach, FL, US)

This crushed coral is perfect for my needs. The cost and shipping with my other items was a no brainer.
Aquarium Co-Op has never let me down.

ALO (Irvine, CA, US)
Value for the Money

Great product that is reasonably priced. One lb size is just right for what I need for my shrimp. Seems to help with my snails as well.