What Is Gh Dt And Th

[joshjames]

got a water testing kit what are GH DT and TH
and what is a good level to have them???
my tank is showing up 21'd on all of them
also carbonate hardnes is showing up 8'd
thanks
my tank is cycling and wanted to know if this was ok

 

[joshjames]

bump

 

[AdAndrews]

gh is the hardness of the water, ignore this unless you are keeping cichlids.. dont know what the other 2 are, sorry

 

[aaronnorth]

general hardeness
total hardness.

Never heard of DT before though.

 

[K-Holed]

°dH (German degree of hardness, 10 mg CaO/l)
°TH (French degree of hardness, 10 mg CaCO3/l)
°e (English degree of hardness, grain CaCO3/gal(UK))