Summer Auto Flowering Grow

This week i started feeding them the jungle juice micro and bloom nutrients, in the lucas formula since they claim to be the exact same product as the general hydroponics trio. I also added rhino skin and sensizym, i got them as a free sample :-). The plants are doing OK, the weather has been better the past few days. At night it is still very cold, but during the day the sun comes out and the plants enjoy it. Sweet tooth still has problems with powdery mildew, and so does pineapple express. Pineapple express i have put in "quarantine" outside, and I don't think she'll be a good smoke but i want to see what she's going to produce. Critical kush is doing great. Her pistils have already started turning orange, and she smells amazing. Her leaves are covered in trichomes, can't wait to harvest! NYC Diesel is doing good too, she's covered in thrichomes and is starting to pack some weight. It has been very cold during the nights, with temps of about 7°C ( 45°F). In the morning when i feed i usually use lukewarm water so that the roots can warm up. I don't know if this is a good idea, but it makes sense in my head. I was wondering when i could start to flush, since i am approaching the 9 week mark and the plants aren't finished yet.