Water amount

Hi mate, It really depends on many things. How big your plant is; How much CO2 is available as will drinl more in high co2 environment. During veg i was feeding my plant anything from 200ml - 500ml per day. I never worry about runnoff as my plant uses an auto pot so where does runnoff come into it. All that does is strip essential nutrients your plants needs. If you're hand watering, water them all a set amount and wait till soil is dry before adding water again. Keeping note of what you are giving them will give you a better idea of how much she is drinking. I hope this helps, good luck and happy growing

Water amount depends on substrate. Plus type of growing. General rule is a 15 to 20 percent run off. Allows old fertilizer, salts, and used chemicals to be rinsed out while replacing with new fresh nutrients.