water storage and mixing tank

[crusty1]

Wow! Looks great!
Have you used the toilet floats for the RO water before?I heard they don't work on ultra pure water as the density is lower than SW or household water. You may want to add some high density foam to your RO float to prevent a flood.
If you do have a problem let me know. I am building an auto top off that will use a solenoid valve and a float switch to prevent this from happening.
Just a thought