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Take 10% off your order with code E10|Before we take a dime, 10% supports no-kill shelters
Walnut Creek PetsWalnut Creek PetsThe Best Life!
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3 Pack Cal, Alk, Mag 500ml (17fl.oz.)
Fish & Reef

3 Pack Cal, Alk, Mag 500ml (17fl.oz.)

$36.90$66.00You save $29.10

Or take an extra 10% off at checkout with code E10.

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Fast, tracked shipping from family-run fulfillment
10% of this order supports no-kill shelters
Questions? Our trainers & aquarists can help
15-day returns on eligible items
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Trusted by reef keepers and freshwater hobbyists alike.

Backed by our team of experienced aquarists — ask us anything about your tank.

Every order helps fund no-kill shelters.

Shipping & returns

Our own products ship in 1–2 business days; partner items are processed in 2–5 business days. Most U.S. orders arrive in 7–14 business days with tracking.

Defective or wrong item? Email photos within 48 hours of delivery and we’ll make it right. See our shipping & returns policy.

Our shelter promise

Before we take a dime, 10% of every order supports no-kill shelters. Nominate your local shelter.

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