Aqua Medic Reef Salt Coral 20kg Bucket
Pack size
20 kg
Cost per litre
$0.48
Water type
Marine/Reef
Aqua Medic Reef Salt Coral 20kg Bucket
Publishes the calcium and magnesium numbers most reef salts leave off the label. Aqua Medic Reef Salt Coral is a marine salt mix built around higher calcium and magnesium levels for coral-heavy systems, with a vitamin B complex added and a formulation Aqua Medic states dissolves without leaving residue. A 20 kg bucket makes 600 litres of mixed saltwater.
Key features
- Documented mineral profile — calcium around 500 mg/L and magnesium around 1,450 mg/L at target salinity, figures Aqua Medic publishes rather than describing only as "elevated".
- 600 L per 20 kg bucket — works out to $0.48 per litre of mixed saltwater at current pricing, calculated automatically from the pack price.
- Vitamin B complex added — included specifically to support coral growth alongside the elevated mineral base.
- pH buffered — formulated to hold pH stable through the mixing and dosing process.
- Dissolves without residue — no cloudy or gritty leftover in the mixing container once fully dissolved.
Specifications
| Pack size | 20 kg bucket |
|---|---|
| Water made | 600 L |
| Cost per litre | $0.48 per litre of mixed saltwater |
| Calcium | Approx. 500 mg/L |
| Magnesium | Approx. 1,450 mg/L |
| Bicarbonate | Approx. 210 mg/L |
| Sodium | Approx. 10,500 mg/L |
| Chloride | Approx. 19,800 mg/L |
| Sulphate | Approx. 2,200 mg/L |
| Strontium | Approx. 16 mg/L |
Which Aqua Medic salt do I need?
| Salt | Best for | Yield (20 kg) | Notable minerals |
|---|---|---|---|
| Reef Salt Coral (this product) | Coral-heavy systems prioritising growth and colouration | 600 L | Ca approx. 500 mg/L, Mg approx. 1,450 mg/L, added vitamin B complex |
| Reef Salt | General reef and fish-only marine systems | 600 L | Elevated Ca and alkalinity reserve, enhanced Sr and I, no published assay |
Both mix to the same 600 L per 20 kg bucket. Reef Salt Coral is the better-documented option if you're tracking Ca and Mg landing points against a stated figure rather than a general "elevated" claim.
Suitable for, and not suitable for
- Suitable for: coral-heavy reef systems where consistent calcium and magnesium supply matters for growth and colouration.
- Not suitable for: freshwater tanks. Fish-only marine systems can use it, but the coral-focused mineral loading is unnecessary extra cost if you're not keeping coral.
Dosage and directions
Mix into RO/DI water using a powerhead or pump to circulate until fully dissolved. Check salinity with a refractometer and allow the freshly mixed batch to reach system temperature before use in a water change or top-off.
Warranty and delivery
Consumable water-care product; standard freight. Keep the bucket sealed and dry between uses to prevent clumping.
Common questions
How is this different from standard Aqua Medic Reef Salt?
Reef Salt Coral carries a published, higher calcium and magnesium profile and added vitamin B complex aimed at coral growth. Standard Reef Salt is formulated around an "elevated" calcium and alkalinity reserve without a published mineral assay. Both yield 600 L per 20 kg bucket.
What salinity are the mineral figures measured at?
The published calcium, magnesium and bicarbonate figures are for water mixed to the product's target marine salinity — verify with a refractometer or hydrometer at your own target before dosing further.
Is the extra cost per litre worth it over standard Reef Salt?
At $0.48 versus $0.43 per litre, the difference is about 5 cents per litre. For coral-heavy systems the documented higher Ca and Mg levels plus the vitamin B complex are the trade-off; for a fish-only or lightly stocked tank, standard Reef Salt covers the same salinity at a lower cost per litre.
