I'm starting to get what I can best describe as white streaks mostly in the bottom of my brite tank that look at first like residue from caustic. However they have persisted and gotten worse over a year and a half. My clean/sani procedures are as follows: Hot water rinse to get tank temp up, 170F caustic circ for 30-60 mins, hot water rinse, 140F acid circ for 15 mins, hot rinse, cool rinse, ClO2 sani circ, CO2 purge, and finally beer. This is the procedure I always follow. I have even tried scrubbing the white streaks with scotch brite and only smears the stains a little and scuffs up my beautiful tank.
So I've finally come to the conclusion that maybe because I don't use the filtered water for clean/sani and we have high mineral content here in ATX, maybe the minerals are getting cooked onto the steel during the hot caustic clean? Seems like the acid cycle should get rid of it though. Any thoughts?
Haven't seen any ill effects in any of our beers, btw.
So I've finally come to the conclusion that maybe because I don't use the filtered water for clean/sani and we have high mineral content here in ATX, maybe the minerals are getting cooked onto the steel during the hot caustic clean? Seems like the acid cycle should get rid of it though. Any thoughts?
Haven't seen any ill effects in any of our beers, btw.
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