Overwatering or inconsistent watering can cause nutrient lockout, even if the minerals are there in abundance. But i see no mention of fertilizer so....Redrum801 said:Nice looking plants there !!! This is my first year also , I started late so I bought some plants hope they grow up as nice as yours . From what I've read yellowing could be either overwatering or a cal/mag deficiency .
To the original poster: you did not mention any sort of fertilizer, have you fed those plants some well balanced nutes yet? The plants seem a bit small for having been planted in January, and living in San Diego's awesome climate.
Also: keep the leaves dry as possible at this point, don't wet them with a hose. Consider starting some copper fungicide treatments because i can see their immune system's have already been compromised (very mild bacterial infection). But some excellent nutrition should heal them slowly as well.