SEA-LAB No.28 Replenisher Block is an automatic replenisher block. Sea Lab No. 28 Replenisher Block always works, and cannot be overdosed.
- Supplies all essential trace elements
- Maintains a constant supply of calcium and strontium
- Stabilizes Acid-Alkaline Balance (pH)
- Prevents toxic ammopnia buildup
Sea Lab 28 restores and maintains the concentration of calcium, strontium and all trace elements at the same levels found in the sea. This is not a slow-dissolve or time-release product. It dissolves only to replace depleted elements. Sea-Lab 28 is for saltwater aquariums only.
2 lb box contains 24 large blocks (3-4 blocks per 50 gallons)