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Ships within 48 hours · Estimated delivery Jul 13 - Jul 18
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Description
Reef•Basis Calcium Dry 200gThe Continuum advantage. ReefBasis Calcium is a high purity calcium in dry form, designed to safely raise the calcium level in marine aquariums, providing essential calcium for increased growth rates in corals, coraline algae, crustaceans and many other marine organisms. It contains no acetate, EDTA, gluconates, polygluconates or other unnecessary organics to pollute your aquarium. It is phosphate and silicate free. May be used simultaneously with
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- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
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Best in 7 days
Best in 7 days
Best in 7 days
Best in 7 days
4.2 ★★★★★
Based on 786 reviews
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Product Reviews
★★★★★ 5
Perfect for Active Kids
Size: 4 Big Kid, Color: Black, Size: 4 Big Kid, Color: Black
My son loves these shoes. He says they’re really comfortable and lightweight, and he can run and play in them easily. So far they’ve held up well. He can fit them. Non Velcro and slip resistant.
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Reviewed in the United States on May 2, 2026
★★★★★ 3
Good, but not great! Insert kept falling out.
Size: 3 Big Kid, Color: Black
I bought these for my 8 year old and the insert was loose and had to be played with multiple times before I could get it to stay in place. I eventually had to place a double sided sticky pad to get the insert to stay.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Comfortable
Size: 3 Big Kid, Color: Dreamlike
Comfortable, pretty, easy to adjust for fit
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Reviewed in the United States on June 11, 2026
★★★★★ 5
a little roomy for narrow feet.
Size: 6 Big Kid, Color: Black/Black
Nice shoes. My little one has narrow feet so they are a little lose. Overall, a nice shoe.
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Reviewed in the United States on June 4, 2026
★★★★★ 5
comfortable
Size: 7 Big Kid, Color: Black/Black
super comfortable!
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Reviewed in the United States on May 30, 2026
