What kind of deficiency or pest is causing this

[Buttercup726]

I don’t see any visible pests on the foliage. I’ve search the soil and nothing shows up. I nervous of micro Root Aphids. I’ve dealt with in the past and this was happening to my leaves during that time.

I’m not overwatering. Waiting until plants are dry. I’m using heavy 16 with some bennies. Adding silica to my third feeding which is straight RO water.

im alarmed because of my past experience with micro rot aphids and seeing this happen to my leaves before. Normally when there is a slight nutrient burn it’s the tips ofthe leave.

any input would be greatly appreciated

also long should a place be completely vacant to rid yourself of micro root aphids??

 

[threatco]

Normally when there is a slight nutrient burn it’s the tips ofthe leave.

Looks like nutrient burn, just progressed a bit past the tip.

 

[Dirtbag]

Too much N causing the burn, and its locking out K which is why the tips of the serrations are getting pale. That's my guess.

 

[One drop]

Too much N causing the burn, and its locking out K which is why the tips of the serrations are getting pale. That's my guess.

yes correct .