I've been eating tomatoes grown in those totes and it doesn't taste like plastic.
My tomatoes are drinking a little more than a gallon of water a day, so I have been filling it with 4 gallons of water every 3 days.
Tomatoes are heavy drinkers. Have you ever made a watering system using float valves and a large reservoir bucket?
I keep trying to put an automatic watering system together that uses float valves and a 55 gallon water barrel. It would be great to have a setup up where I just filled the 55-gallon rain barrel maybe only once or twice a month but keeps all my containers properly watered.