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Keep your marine aquarium balanced and thriving with a simple, hands-off solution for replenishing vital elements. Designed for larger tanks, Sea-Lab Marine Aquarium Products Automatic Replenisher Block #28 24ct 2lbs provides a steady release of calcium, strontium, and all 15 essential trace elements to maintain natural ocean concentrations. This unique formula automatically delivers the exact amounts needed as elements are depleted, eliminating the risk of overdosing or deficiency. Sea-Lab Marine Aquarium Products are trusted by aquarists worldwide for maintaining optimal water chemistry in saltwater environments. For smaller setups, small fish tank filters offer efficient mechanical and biological filtration to keep water clean and fish healthy.
A balanced mixture of naturally occurring marine buffer compounds, calcium, strontium, and essential trace elements.
| Element | Amount |
| Calcium | 400 |
| Strontium | 8 |
| Boron | 4.6 |
| Fluorine | 0.3 |
| Iodine | 0.06 |
| Iron | 0.01 |
| Molybdenum | 0.01 |
| Aluminum | 0.01 |
| Zinc | 0.014 |
| Selenium | 0.004 |
| Copper | 0.003 |
| Nickel | 0.002 |
| Manganese | 0.002 |
| Tin | 0.002 |
| Vanadium | 0.002 |
| Chromium | 0.00005 |
| Cobalt | 0.0005 |
Automatic replenisher block
Solid block
Maintains calcium, strontium, and trace elements in marine aquariums
Large marine aquariums with fish, corals, and invertebrates
Anywhere with a moderate water current
