Excellent post. One of many designs we have seen here and elsewhere. I have found that these totes when exposed to sunlight for long periods of time and temperature extremes become very brittle and fracture quite easily. That and their cost would deter me from using them in this way. Also there are much simpler designs that accomplish all the basics to achieve extended watering without overwatering. I prefer smaller containers obtained for free such as dumpster diving at construction sites for 5 gallon latex paint buckets which for the most part if obtained soon after use can be cleaned out near pristine. jus sayin. Anyone interested might try using SM search to find other examples.
I used a 35 gallon tank from Tractor Supply and used regular house piping to make one for my rabbits. Worked great until winter and then it froze. Shortly there after we got rid of the rabbits, but work well for a while
