Seachem Laboratories Reef Complete Supplement 17 fl. oz

When your corals are growing well, the last thing you want is to run short on the calcium that keeps them building. Seachem Laboratories Reef Complete Supplement is a concentrated, optimized blend of ionic calcium designed to restore and maintain calcium to the levels found in natural seawater, and Seachem notes it does so without affecting pH. This is the larger 17 fl oz size, a great choice for bigger reefs or keepers who dose often and want fewer reorders. Keep the calcium flowing for the corals you love.

• A concentrated ionic calcium blend, listed at 160,000 mg/L, optimized to restore and maintain seawater calcium levels.
• Seachem says it works without affecting pH, supporting calcium while preserving your tank's balance.
• Calcium and carbonates are essential to all coral growth, and Reef Complete delivers the calcium half of that pairing.
• Helps prevent the deficiency that, according to Seachem, can halt coral growth and lead to declining coral health.
• Also includes magnesium and strontium in amounts proportionate to typical utilization ratios of 100:5:0.1 (Ca:Mg:Sr).
• That proportionate formula helps you maintain magnesium and strontium right alongside calcium.
• Seachem describes it as a liquid ionic calcium and cautions against products that are milky white or need shaking.
• The label states DO NOT OVERDOSE, so dosing as directed keeps things safe and controlled.
• Works with carbonate supplements such as Reef Builder or Reef Carbonate to cover calcium and carbonates together.
• The big 17 fl oz size is ideal for larger tanks and frequent dosers who want more between reorders.

Consistency is everything in a reef, and the generous 17 fl oz bottle helps you keep calcium steady without running low at the wrong moment. Because Seachem builds in magnesium and strontium in proportionate amounts, you support multiple key elements together while focusing on calcium. Dose it as directed alongside a carbonate source, never overdose, and let your corals keep their slow, steady march upward. For dedicated reef keepers and larger systems, this size means less restocking and more enjoying the view. Give your living reef the dependable calcium foundation it needs to keep thriving.