Thanks for the input guys.. Im very anal with the water i use actually lol i use all bottled poland spring water lol i check the ph on every bottle as well.. Im using all advanced nutes i feed once a week and water every 3 days or so.. I tried the epsom salt remedy a few days ago but i wasnt to sure of the ratio i should use so i only went lil less than 2tsp per gallon and foilar fed them with that.. But whats really strange is only 2 of the 4 have this issue the other 2 are looking amazing lol.. The new growth on one of the "sick" ones is looking a lot better so maybe i got that one licked.. The other doesnt have any of the rust spots just like white blotches but besides that its growing extremely well.. Im just worried that the problem on the other one is going to come back when i really dont know whats causing it.. Does anyone know the right epsom salt mixture? maybe i can try that again if my mixture wasnt right.. Im going to post more recent pics either later on or tomorrow.. Thanks guys!!