Pouring the water downwards makes the plants grow more roots down into the soil in search of the water...more roots healthier plant. But I'm no expert, might work to a point, but they could get to moist and promote root rot too.
Indeed, no expert. If the plants are "looking downward for water," then wouldn't it make sense to put the water at the bottom of the pot?
I've spoken with my local hydro-grow store and spoke to him about this. I've been feeding my plants like this since April, and haven't had an issue with root-rot or otherwise.
First off, you feed the plants on a schedule. Personally, I water them (day one), they dry for two days (day two and three), and then feed them on the final day (day four).
I mix up 1 liter per plant with my food. I put the pots in trays that are designed to catch water-overflow (they're clear in my case). The plants are planted in a
soil-less mix. This means, no nutrients, neutral pH, and no chance of bugs or things in the soil.
When I pour the food-water mix into the trays, I let the water sit there for 10minutes. When 10minutes have passed, I remove any excess water after that time (unless it's just a few drops). If you find that your plants are showing signs of being over-watered, simply adjust this "sit" time.
I feed-water for two cycles followed by one cycle of just pure water. This will help to prevent /nutrient build up/burn.
During the first stages after the transplant, I did do a small amount of top-feeding as well. I wasn't sure if the roots could reach the water that was being absorbed.
If you have any questions at all, shoot me a PM or message me in this thread.
Cheers!
