cloudy water

Hi, I had this same problem in my last grow, white foam on top and cloudy/milky water (posted -> here <- some month ago) Cleaned all the system with water and bleach, removed all organic nute but after some days again some white foam on top, luckily it disappear after some days and water still...

Hey guys i really need some help. I am growing in a dwc/bubbleponics setup, the water temperature is 20°C, Ph is roughly around 6, i am using RO water that i get from the air conditioning and from a RO filter. The problem is no matter what i do the water keeps turning cloudy and the roots have...