Please Help! Can Anyone Please Tell Me What Looks To Be Wrong

Hello, I have Two Plants with dots on them. I have no idea whats wrong with them. Can someone please tell me what i can do to fix them.

What you feeding them ? Is the air flow good ?

are u using any nutes or using lights if ur using lights please tell me what ones

Nothing Just use water AFTER the soil is dry NOTHING IS WRONG. chill. After you watter check out ph and stuff.

Dolomite lime your soil so you dont have to worry about PH

I am using 5 florescent T5 24" lights, humidity is around 55-65%, and temp is between 27C-30C.I am feeding them rain water mixed with Earth Juice (2TBSP Grow, 1TSP Bloom, 1TSP Catalyst) I feed them that every other feeding. I use rain water because water at my house is poison. Only 2 out of 10 plants have this. All are using same soil mixtures, and have same conditions.

2 other plants are now showing the same symptoms Yellows dots that seem to be consuming the leaves from leaf edges to middle. I checked the rain waters pH its 5.9. Seems to be ok. I checked soil pH which is between 6.7-6.9.