leaf burn???

ive noticed some burns not sure what the cause is could i be useing too much nutriants? also some leafs are curling upwards how can i fix this ...

looks like its only some water spots. everything looks healthy to me

Im not seeing any burns?

I think your fine man

ive noticed more of these so called water spots on the plants it looks like its spreading also there are insects in the soil there really small and jump when i touch the soil ... what are these things and will they kill the plants ????