When I built my hydro system I cleaned all the pipes after cut and cleaned the insides out. The first time I ran it with straight faucet water it left a white film on the sides of everything. Figured it was just from the pipes getting a soak. So I emptied the system out and refilled. Was as bad but still a white residue. The third time I put bleach in the system just to kill anything and maybe clean it out. This left a real thick white film on the sides of the buckets. Emptied the system and scrubbed it, I scrub it really good after every time I empty it. So after do that I fill it back up and empty it a couple times. I’m trying to get a system down and have it down before I setup everything and run it. Not really any white residue these times, maybe a tiny tiny bit. So I decide todo another bleach wash, only 6 cap fulls for the system. That time it left thick white residue again. Do you know if this is the bleach or is the bleach cleaning the pvc really good? Have you ever experienced this? Like I said, I washed the system good I thought a before putting everything together. I haven’t put water back into since the last bleach clean. Even after scrubbing it I can still see tiny dried white spots in places around the bulk heads and hard to scrub places. Any advice?