Hey tiny...So watering during dark periods is a bad idea. At first I thought watering at night seemed like a a scientifically intelligent decision. They would absorb more, grow quicker, etc. This is simply not the case.

Plants, like humans, exert most of their energy during the day. They need to fuel themselves with feedings to keep their energy level up during their 12 or 18 hours of daylight. Just as it is important to humans...rest is necessary. The lack of work at night (exerting energy to absorb nutrients through feedings) is beneficial to the plants overall growth during daylight hours...not to mention they will stretch more at night too! :jointsmile

Plants that are watered at night are simply not rested enough to grow to their full potential during the day. With bud development and veg this is crucial...(seedlings are different).

So...my 2 cents is this. Rest your plants at night. Feed them during the day. It makes sense.