What kind of spots are these??

This is the 5th grow with this strain. I've tried everything I could think of, they just keep coming back... The smoke seems to be OK. I hope somebody has seen this before. (hope the pic's work out)

Where you at? Veg? Flower? How far along?

whats your ph? what kind of nuets are you using? you watering from the tap? sometimes that nasty stuff can cause problems a few of mine looked like royal shit until i switched to distilled water.

it kind of looks like mites. Have you checked the undersides of the leaves?

40 days into flower,ph is between 6 and 7. I use litmus paper to judge ph( in the ball park but not exact)
DYNA GROW 7-9-5 for vegging. Botanicare Pure Blend , Cal-Mag. All organic. Iuse apple cider vinegar for PH, also 2.5 mil per gal. These plants in the pic have already been harvested, good smoke.
I have a strong magnifyiung glass, haven't found any bugs?? Nothing moves, I have read that if you have bugs you can see them easily...,The yield for eight plants was 5+ oz... I don't know if thats good or not. I hope that if I can improve the spot quandry, yield will improve along with it.

I have the exact same spots....can't figure it out.

hydrogen peroxide 5mil per gal

Get a magnifying glass and look underneath for black or red spots moving underneath. To me it looks like spider mite damage..If not could be a calcium problem or mag

im guessing that its a problem with your water, my bud houses our mothers and clones,when he brings over clones some have those spots. after 2 weeks into flowering on my water the spots disapeer. we feel that there mite be a salt or calcium level that is to high in his water.