help first time grower

i got three strains gran daddy black domina and sun kiss the sun kiss has brown and gray spotts look like some one sprayed them with spray paint im using house of gardens full scheme i want to change to flowering but i want to fix them first i got some of the best growing stuff and set my closet up very carefully to avoid beginner mistakes. iv done lots of reading to avoid some problems too. i was only watering them once a day so im almost shure its nutrient diff. tell me what u think thanks when i mixed my solution it was a starting ec of .75 and rose to 1.0 after 12 days is this normal? ph was 5.6 at first and rose to 6.3 the site wont let me post pics it goes to upload then gos to a this page cannot be found wtf?

these r pics

You may find this to be a help, I am no expert but have had to refer to this page often.

http://www.drugs-forum.com/growfaq/97.htm

Nit. def possible....I had thirps and the markings they left looked very similar to yours. Look very very close on the leaves for tiny bugs or tiny specks of black bug crap. Its hard to see....took me a bit to find em.

think it was light stress
Experimentation is the only sure method to determine the best solution for each plant. If plants are not receiving enough light, they begin to grow tall and spindly as if stretching for the light and foliage becomes pale green. Or, if they need to be moved closer to the light, or given a longer light exposure period. Too much light may lead to bleaching of leaves and flowers, browning and shriveling. Leaves Ok..