1st grow royal cheese from queen seeds

hello every one could somebody tell me if i have slow growth rate or not this lady life now is 36 days and i measure the height of the pant about 24 cm.
lights 400 watt Hps.
premixed organic soil peat moss vs perlite 1:2 .
Pot 40 Cm diameter.
Ph 6.5.
PPM 1250.

She's fine, don't worry

Yeah she's definitely fine. Some strains are just more vigorous then others.

thanks guys for the help

No problem

i would slightly back of the nutes 1250ppm is i bit high for this stage of the plant