Coral Builder 1000 gram from Kent Marine. Specially formulated alkalinity or carbonate hardness (KH) builder designed to build the KH of marine reef aquariums.

When used as directed, Coral Builder is designed to have only minimal impact on calcium, magnesium or strontium levels unlike other buffers
• Stabilizes pH and prevents pH drop
• Coral Builder is the finest buffer available for reef type marine aquariums and is designed to mix clear with little or no cloudiness or precipitation
• Will not flake on your corals as competing products can!

Directions:
Coral Builder is designed to be used in reef aquariums where the pH is already near 8.3
• It will not raise pH
•If pH is low, use SuperBuffer dKH, instead, until desired pH is reached, then switch back to this product
• To raise alkalinity or KH, dissolve one teaspoon of Coral Builder in a glass of fresh water
• Add directly to tank or sump for each 40 gallons (160 liters) of tank capacity each day until the desired alkalinity (carbonate hardness or KH) is reached.
•Wait 1 hour to re-measure alkalinity
• A pH of 8.0 to 8.3 and an alkalinity of 2.9 to 4.0 meq/L (8 to 11 dKH) is recommended for marine reef aquariums
• After target alkalinity is reached, use ½ teaspoon per 40 gallons (160 liters) twice weekly, to maintain values
• Measure alkalinity and adjust schedule as necessary
• Use Kent Kalkwasser Mix, Concentrated Liquid Calcium, or Turbo-Calcium and Kent Strontium & Molybdenum Supplement, as directed to provide needed minerals for invertebrates.
•TechI Iodine supplement will supply long lasting Iodine for invertebrates.

If you have trouble maintaining calcium or buffer level, check to see that the salt mix you are using has seawater level of magnesium. (Some popular newer salts have only half the level of magnesium necessary, resulting in low calcium solubility and poor buffering!) Use Kent Marine Essential Elements & Coral-Vite weekly to provide proper trace minerals. Kent Coral Accel will provide for healthy coral tissue growth.