Indoor, under 400w HPS 12/12 for 5 days so far, in soil, just flushed with rain water then repotted in 5gal bucket with existing soil, added 30% perlite to older potting soil. Rainwater pH 7.0
Lights are 10" from plants
temps go from 69(dark) to 81 w/ light on, 55% rh
I am running an old furnace blower motor for exhaust 4X10 into carbon filter, with (1)7" and (1)6" passive intakes.

The pH probe did not come today, but I used a metal probe one for soil and checked the pH of the soil, (around 5.5). I am not able to check the runoff pH until I get the new probe.

I did not know about the leaching. I have not been spraying the leaves until today because I thought I might have over did it with the neem.