Cleaning tubing is best done within a few days of the end of the season, before any mold begins to show. When you pump the hydrogen peroxide solution up thru the tubing just let it discharge 3-4 minutes, then plug the tap into or onto the tee. Leave the mixture in all year. With the sunlight the mixture will soon break down into oxygen and water. Then prior to next season, mid-late fall, flush with good water and drain. The extended contact will kill most micro organisms and leave the lines clean.
This works, but most are now doing the dry clean method, run the pump until all sign of moisture is gone and leave the lines plugged at each tap. I used to use the food grade hydrogen peroxide method, but have since been using the dry method (for 6 years now). On that, the sooner you get it dry after the season the better too.
Dave Klish, I recently ordered a 2x6 wood fired evaporator from A&A Sheet Metal which I will be converting to oil fired
Now have solar, 2x6 finish pan, 5 bank 7x7 filter press, large water jacketed bottler, and tankless water heater.
Recently bought another Gingerich RO, this one was a 125, but a second membrane was added thus is a 250, like I had.
After running a 2x3, a 2x6, 3x8 tapping from 79 taps up to 1320 all woodfired, now I'm going to a 2x6 oil fired and a 200-425 taps.