Wood fired hot tubs, any good?

[Timbo]

I have three electric hot tubs on lets .The management is not to bad but you do need to check every day and drain down
between lets .The running cost are getting expensive and it takes 3 hrs to change over 3 tubs. The wood heat ones will be
much harder to keep the water save ,just imagine being in a hot bath and letting it cool down then reheating .YOU NEED
CHEMICAL IN WATER OR YOU ARE ASKING FOR BIG TROUBLE!!!!

200% what he said ^^^^