Minor Problem Question and PICTURES

THE Main problem i have and im not sure if it a problem but its something new to my plants, it the leaves are getting wrinkly or wavy toward the bottom/middle where they all come together, and the leaves were kinda droopy today. It could be just some changes going on but do you notice anything? The last time they were water was about 2 or 3 days ago but i watered them pretty good.

its 2 cold buddy

its not the temp. i have the same problem, and nobody seems to know how to fix it. its not in any books ive been trying to find the answer for weeks, the closest i came was a ph imbalance

I suggest let it be.
You look like you have the same type of soil as me.
I watered once a week sometimes 10 days. They wont die on you. If you do see an opposite reaction shorten the watering cycle.

looks good by the way.