Kent Marine Liquid Calcium 8 oz.
Concentrated Liquid Calcium provides bio-available calcium for lush growth of purple, pink and green calcareous algae, snails, hard tube worms, and clams. Corals will open more and stay attached to their skeletons better with regular use. This product is free of phosphate and nitrate. It contains no gluconates, EDTA, or other organics that can raise DOC levels, unlike many competing products.
Usage Recommendations
- Use Kent Kalkwasser Mix first to establish baseline conditions.
- Then increase calcium levels with this Liquid Calcium product.
- For optimal results, add Kent Marine Strontium & Molybdenum Supplement.
- Additional benefits may be achieved with CoralVite and Essential Elements.
| Specification | Value |
|---|---|
| Volume | 8 oz |
| Brand | Central Garden & Pet – Aquatic |
| Product Type | Liquid Calcium |
| Contains | Calcium, no phosphate, nitrate, gluconates, EDTA, or organics |
| Royal Item Number | AKMLC8 |
FAQ
Can this product be used alone for calcium supplementation?
While Liquid Calcium alone can meet calcium needs, it is recommended to use Kent Kalkwasser Mix first for best results.
Is strontium required for optimal coral health?
Yes, strontium addition via Kent Marine Strontium & Molybdenum Supplement is absolutely necessary for coral health and proper skeletal formation.
Does this product contain any organic additives?
No, this product contains no gluconates, EDTA, or other organics that could raise DOC levels.

Elizabeth Lawrence –
Used this with Kalkwasser Mix and strontium supplement. My corals have opened up significantly and the clams are thriving. No algae blooms or cloudiness in the tank. Clear and effective.
Stephanie Dowd –
Good calcium source, works well after mixing with Kalkwasser. My snails are more active and the green algae has grown nicely. Would recommend with proper supplements.
Joanne Lyman –
No issues with water clarity or DOC levels. The calcium boost is steady and visible in coral attachment. Combined with strontium, results are impressive.
Colin Jackson –
Tried it after switching from a commercial calcium product. Much cleaner formula. No off odors or residue. Works well in a 55-gallon reef tank.