Cost per litre
9.0c
Water type
Freshwater
Seachem Gold Salt
A tonic salt built for goldfish, not marine tanks. Seachem Gold Salt is a conditioning salt blend for goldfish and other prized coldwater ornamentals. It supports slime coat and general health, and — unlike most tonic salts — also helps guard against nitrite poisoning during cycling and stocking changes. It has no effect on pH and provides no buffering, so it can be used alongside Gold Buffer without the two working against each other.
Key features
- Helps guard against nitrite poisoning — useful when cycling a tank or adding new stock.
- Supports slime coat and general health in goldfish and coldwater ornamentals.
- No effect on pH — provides no buffering, so it pairs cleanly with Gold Buffer.
- Dissolves cleanly for straightforward dosing.
- From 4c per litre treated in the 300 g pack — see the comparison below.
Specifications
| Brand | Seachem |
|---|---|
| Type | Goldfish conditioning salt |
| Effect on pH | None — no buffering |
| Composition | Not published in detail by the manufacturer; full composition available via Seachem's SDS portal (sds.seachem.com) |
| Water type | Freshwater — goldfish and coldwater ornamentals |
Which pack size do I need?
| Pack | Barcode | Price | Treats (at 18 g/40 L) | Cost per litre |
|---|---|---|---|---|
| 70 g | 116021401 | $13.95 | ~155 L | 9c |
| 300 g | 116021609 | $29.95 | ~666 L | 4c |
The 300 g pack works out to roughly 4c per litre of treated water, against 9c per litre for the 70 g size — more than twice the value once you are topping up a tank regularly.
Dosage and directions
Dissolve 18 g (about 1 tablespoon) in freshwater before adding — do not drop dry salt straight into an established tank. Use at 18 g per 40 L (10 US gallons) when setting up a new tank and at each water change. Do not use to replace water lost purely to evaporation — evaporation concentrates existing salts, so topping up with salted water pushes the level too high.
Suitable for, and not suitable for
- Suitable for freshwater goldfish and coldwater ornamental aquariums.
- Not suitable for marine or reef systems.
- Manufacturer does not publish invertebrate or plant safety data for this product — treat it as goldfish-only unless you can confirm otherwise for your livestock.
Safety
Keep to the stated dose. Oversalting a freshwater tank stresses fish rather than helping them.
Warranty and delivery
Covered by the manufacturer's quality guarantee, in addition to your rights under Australian Consumer Law. Standard shipping from our North Lakes warehouse.
Common questions
Does this affect my pH?
No. Gold Salt has no buffering effect — pair it with Gold Buffer if you separately need to raise pH.
Can I add it dry to my tank?
No. Dissolve it in freshwater first, then add the solution to the tank.
Which pack size is better value?
The 300 g pack is cheaper per litre treated — about 4c/L against 9c/L for the 70 g pack.
Is it reef safe?
Seachem does not publish invertebrate or plant safety data for Gold Salt. Treat it as a goldfish and freshwater-only product.




