2018 the year of problems haha

Title says it all. 2017 went very smooth no problems what so ever.
2018 has been messed up.
Almost all my plants are sick.

Week 3/4 of flower

There different plants but showing same sysmltoms,
plant with yellow leaves everywhere is same plant I had a whole top branch just wilt and die. Same how this branch below is dying.
Have root aphids that I didn’t catch until yesterday
Did soil drench with 1tbs of azamax per gallon yesterday, and I’m going to spray leaves with azamax tomorrow,
Also have tiny tiny fly thing around tops..

My question is would root aphids and white flies cause all these yellowing leaves?

Looks normal for this time of year

Root aphids can look like a deficiency, but you seem ok at least.
I picked up root aphids inside this year, made the leaves turn red.

Hard to tell from the picture, but if a whole limb is wilted, that could be a problem with the roots. Where I grow, I deal with a lot of termites. When they eat the roots, that is how the plants look. Wilted the first day, then slowly dying after that.

But too much nutes can cause root problems too.