I'm about to start spraying females with colloidal silver, I can't find what time is best to spray. Lights on or lights off? Is it best in the morning, midday, night, is there a difference?
Always best to spray just before lights on. You can also do it just before lights out. Its also best to start a few days before the flip to flower. Make sure the spray is over 20ppm and spray for 20 days. Cheers!