Originally Posted by
creeperpark
You did good with the info you have and good efforts as well. The best thing about this, is you get to learn what happened, and how to prevent it from happening again in future grows. As far as allowing 15 to 20% run-off, you are running off your nutrients right out of the pot! You are washing them away and that's why your foliage started to lighten. Washing out "EXCESS synthetic nutrients build up" is the focus with 15 to 20% run off. At the beginning there is no excess, theirs only enough for about 4 to 6 weeks. Just allow a drop of 2 to run off in the beginning, until you start using your feeds. No run off until you use nutrients.
When you start using your feeds, start at 1/4 manufactures recommendation, and slowly introduce into your substrate. That way, the pH won't swing so much! I like to feed from the bottom of the pot in the first beginning feeds. Example using 2000 ml water dose. Water on top with 1000 ml plain water. Bottom feed with 1000 ml of 1/4 nutrients in drain tray. What happens is the plant starts growing vigorously in a few days to a week. Then you can increase you feed and top feed and allow 10 to 20% run off.
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