Thallium is a toxic element that can be introduced into the aquarium via inferior potassium salts, vegetable feed and cement. Values above 10 µg/l (0,26 be avoided. Thallium can easily be removed from the system via iron adsorbers such as Powerphos, Phos 0.04 or CoralBalance.
Addition is not necessary.

Value too high:

Partial water change, filtration via zeolite and Powerphos.

Value too low:

No dosing provided!

Variety transition metal
Standard value 0-2 µg/l (0,26
Skill level Red, only for experienced aquarists
Source Salt, trace mixtures, cement
Available none
Importance 1–6 1
Detection quality medium

Balling Light:

The addition of thallium is not intended.