Answer a few simple questions to get a daily watering plan for your plants.
How to find this: Time how many seconds it takes your pump to fill a 1-liter jug. If it takes 30 seconds, your flow rate is 2.0 L/min (because 60 ÷ 30 = 2).
This is a baseline for water needs. "50" is a good start. Increase for thirsty plants or decrease for plants that prefer drier soil.
Give your plants a total of liters of water per day.
Your pump should run times over hours (while lights are on).
Each time, run the pump for seconds.
Wait approximately between each watering.