Name: Big Bill Livonia Michigan (Zone 6a) If you need to relax, grow plants!!
Well you can figure how many gallons by measuring the bottom part first. Say it is 6x 9 and 24 deep.
Then measure the top part, say it is 10 x 15 and 9" deep. Multiply each, divide by 231 and then add the two parts together for total gallons.
Orchid lecturer, teacher and judge. Retired Wildlife Biologist. Supervisor of a nature preserve up until I retired.