Thanks Kurt, yeah we are very similar on evaporation and caught the typo.
One gallon per day out of my 72 is bout a cuppaday, similar to my Joe consumption perhaps.
Wonder how many cups of coffee I pass per 10 gallons of body mass. Lets see, Hmmmmm. 7.5 pounds to a gallon equals 20 gallons (OK OK, I am rounding) Two cuppa Joe per day... Tank to Mike ratio is .5 at STP based on average Avoirdupois measurement
Yah, waaaayyyy to much time on my hands this Afternoon