NT LABS Aquarium Tonic Salt 300g

When to use :

Freshwater fish constantly regulate their internal salt concentration through a process called osmoregulation. When fish become stressed or diseased this process becomes dysfunctional and fish begin to lose control of this salt regulation.
Tonic Salt provides osmotic support and assists with recovery from stress and disease.
How to use :

Dissolve the required amount in a small volume of aquarium water before adding to your aquarium.
To use as a General Tonic – add 1g / L
To support recovery from Wounds/Parasites – add 3g/L
To control Nitrite levels – add 1g/L
New Fish Dip – add 25g / L. Place new arrivals in a net and dip them for up to 1 minute in a separate container

“Comprehensive and easy to use, I often like to have a couple of bottles of Anti-Internal Bacteria treatment or Disease Solve to hand. Nice to know that I’m not the only one who rates these products!” Nathan Hill, the Associate Editor of Practical Fishkeeping Magazine
Do not use with salt sensitive species.

NT Labs Tonic Salt 300g for osmotic support in SG tanks

Aquarium salt is one of the most versatile aids a freshwater keeper can own, and Tonic Salt gives you measured osmotic support that helps stressed or recovering fish manage their internal salt balance. We recommend it as a general tonic during recovery, as a short dip for new arrivals, and as a tool to reduce nitrite stress while you fix the underlying cause. Always dissolve it fully in a little tank water before adding.

A practical caution for Singapore planted-tank owners: many aquatic plants and some scaleless or salt-sensitive fish do not appreciate sustained salt, so dose deliberately and to a known volume rather than guessing. It is best used in a hospital or quarantine tank where you can control exposure precisely. Keep your usual maintenance and aeration going, since salt supports the fish but does not substitute for clean, stable water.

Read our freshwater aquarium salt guide for dosing context and our quarantining new fish walkthrough for using it on arrivals. More remedies sit in our conditioners & medication range.