hillmananswered grow question 4 years ago Browsed through your diary...my conclusion is hydric stress, meaning in this case your substrate does not drain well (no perlite like you said). What you could do is to carefully drill holes on the side walls. Try on 2 of them first, the worst looking ones. Rise a little the temp if possible to increase perspiration . Do you have a working fan in there ? Stop watering until substrate is visibly dry or the roots will rot and plants will dry. Next time You´ll know and put drainage on the must list :-) ! The other thing You could do is add 10 medium sized earthworms per pot( considering its volume), they will increase to some extent the drainage, wich is better then nothing. If no visible changes in a week, add another 10. Hope this helps. Spirit Up !