Hydro plants will tell you what's happening. Get a blue lab guardian and a reference meter determine PPMs. PPMs go up back off on nutes, PPMs go down increase nutes, you want stability never ever trust just one meter........ Never been able to go above 800 PPMs with any strain. Advanced nutes used water 280 PPMs the rest nutes. You want to be on cruise control not in panic mode. Dirt forget it you don't know what the frock is going on until you see the plants in distress by then you entered the panic zone.