Pro Shrimp

HK Dry Ocean Reef Rock ** 20-30cm ** LARGE (per kg)

HK Dry Ocean Reef Rock ** 20-30cm ** LARGE (per kg) - Main image
$2.87 $3.99 In stock

Category: Aquarium Rocks

Dry Ocean Reef Rock 20-30cm

These rocks are not inert and will release minerals into the water. They are not suitable for soft water shrimp setups and should only be used in tanks with hard water shrimp (Cherry, Amano etc.) or marine tanks. Regular water changes as part of maintenance, advisable. These are sometimes used in certain sulawesi shrimp setups.


Weight and size always varies by type of rock. We will try to mix and match your chosen weight as closely as possible, but this can't always be guaranteed! If you have a preference in number of rocks or size, please leave a note during checkout and we will try to accommodate where possible. Since this is a natural product individual rocks will vary. You are welcome to pick out your own pieces by visiting our shop in Mansfield.


Always rinse and clean rocks before adding them!

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 4 reviews)

Ava H. ★★★★★

I was a bit worried about mineral release since I keep hard water shrimp, but these rocks actually buffered the pH perfectly and my colony has never looked better. The 20-30cm pieces are massive and create really dramatic caves.

Matthew G. ★★★★★

The large 20-30cm size really lets you build a dramatic aquascape in one go, and I love how the rough texture gives shrimp plenty of grazing spots. My hard water tank's mineral levels have stayed steady since adding these, and the pieces are sturdy enough to stack without shifting.

Brian X. ★★★★★

These rocks have a really nice rugged texture that my cichlids love exploring, and the 20-30cm size pieces are perfect for building stable caves. They've been releasing minerals into the water just as described, and my hard water tank is thriving with them.