Win AquaMaxx Synergy Plus 2-Part Supplements! The most popular way to maintain calcium and alkalinity levels in a reef aquarium is to use balanced 2-part calcium and alkalinity supplements. This week we are giving away 2 x 32 oz. bottles of AquaMaxx Synergy Plus. The "Plus" in this formulation is the inclusion of iodine, strontium, bromide, boron, trace elements and magnesium to help boost the growth of your corals. Want an easy way to maintain the ionic balance in your reef tank? ENTER NOW. Registration ENDS at 11:59 PM PST on 11/25/13. Details: Open to US residents 18 years or older. Void where prohibited or restriced by law. Winner will be contacted via email.