Aqua Medic Reef Salt 20kg Bucket
Pack size
20 kg
Cost per litre
$0.43
Water type
Marine/Reef
Aqua Medic Reef Salt 20kg Bucket
Mixes to under 44 cents a litre and doesn't lean on chelating agents to hit its numbers. Aqua Medic Reef Salt is a marine salt mix formulated for reef and fish-only saltwater aquariums, dissolving to 35‰ salinity at a ratio of 38 g of salt per litre of water. A 20 kg bucket makes 600 litres of mixed saltwater — enough for a full 400 L system change with margin for top-offs.
Key features
- 38 g/L mix ratio — dissolves to 35‰ salinity, the standard reef target, without needing to over- or under-dose to compensate.
- 600 L per 20 kg bucket — works out to $0.43 per litre of mixed saltwater at current pricing, calculated automatically from the pack price so it always reflects what you'd actually pay.
- Elevated calcium and alkalinity reserve — formulated to hold Ca and KH up without relying on chelating agents, which some reefers avoid over concerns about long-term trace element binding.
- Enhanced strontium and iodine — included above baseline levels alongside the standard trace element package.
- No nitrates or phosphates — won't contribute to nuisance algae load on mixing day.
Specifications
| Pack size | 20 kg bucket |
|---|---|
| Water made | 600 L |
| Mix ratio | 38 g of salt per litre of water |
| Target salinity | 35‰ |
| Cost per litre | $0.43 per litre of mixed saltwater |
| Formulation | Standard reef and fish-only marine salt |
Which Aqua Medic salt do I need?
| Salt | Best for | Yield (20 kg) | Notable minerals |
|---|---|---|---|
| Reef Salt (this product) | General reef and fish-only marine systems | 600 L | Elevated Ca and alkalinity reserve, enhanced Sr and I |
| Reef Salt Coral | 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 Coral publishes exact calcium, magnesium and bicarbonate figures on its own listing; Aqua Medic markets the standard Reef Salt on its elevated reserve and trace element package rather than a published mineral assay, so if you want a documented Ca/Mg/KH landing point rather than a stated "elevated" claim, Reef Salt Coral is the better-documented choice. Both mix at the same 38 g/L ratio and yield the same 600 L per 20 kg.
Suitable for, and not suitable for
- Suitable for: reef, FOWLR and fish-only marine aquariums needing a general-purpose salt mix.
- Not suitable for: freshwater tanks, and reefers who specifically need a published, guaranteed mineral assay at time of mixing — see Reef Salt Coral above for that.
Dosage and directions
Mix into RO/DI water at 38 g per litre, using a powerhead or pump to circulate until fully dissolved — typically 15–30 minutes. Check salinity with a refractometer before adding to the display or topping off, and allow freshly mixed water to reach system temperature first.
Warranty and delivery
Consumable water-care product; standard freight. Store the bucket sealed and dry between uses to prevent clumping.
Common questions
How many litres does one 20 kg bucket make?
600 litres of mixed saltwater at the standard 38 g/L ratio for 35‰ salinity.
What's the actual cost per litre?
$0.43 per litre of mixed saltwater at current pricing — this figure is calculated live from the pack price, so it updates automatically if the price changes.
Does this contain chelating agents?
No — Aqua Medic states the elevated calcium and alkalinity reserve is achieved without them.
Is this the same as Reef Salt Coral?
No. Both yield 600 L per 20 kg bucket at the same mix ratio, but Reef Salt Coral is formulated with published, higher calcium and magnesium figures and added vitamin B complex aimed at coral growth and colouration.
