Magnesium Calculator

Each month, one lucky Preferred Reefer will receive a $100 Bulk Reef Supply gift card, and here's how to enter:

1. Log in to your account on BulkReefSupply.com or BRSFresh.com
2. Visit the product page and click on the "reviews" tab
3. Share your experience by submitting a thoughtful product review
4. Automatically get entered to win a $100 gift card

Yes, you can leave more than one review to increase your chances of winning! Every approved product review counts as a valid entry. Entries will be limited to only those reviews that have been approved within the previous 30 days. One winner will be chosen each month and winners will be contacted via the email address on file.  Click here to view the full terms & conditions.