As a general rule yes, but it also depends on your grow method.
Most methods require > 1000 ppms in grow and > 1500-2K+ in flower watering/fertilizing every couple days.
In HPA, one only needs a max of 600 in late flower and a max of 850 in late flower, which is probably 1/2 strength. This is due to the super efficient delivery of nutes 24/7. hth