How big is the plant, what is the growing medium, what are your temps like? You should just go by bucket weight...
i havnt started it yet but iv been running tests and the temp stays at 78 even when lights are on and 72 when the lights are off, the humidity stays at 58% and my mix is Pro-Mix BX, Perlite, dolomite lime, and castings
You want to water until you see a decent amount of run-off. 3/4th of a gallon every 4-5 days works for me, but it will vary. You could dip your finger into the top few inches of the soil, if it is dry, you'll probably be good to water again. Like I said though, weight will be the best indicator, you just have to get used to it.
i have a drip tip on them and it runs around 200ML every 30mins do you think i should run that every couple days are do you think i should put it on a timer?