Actually, it was just so I would know it. Also, to see how big a 500g pond would be. (mostly curiosity.)
I reversed the Formula to determine the third Dimention of said pond attwo foot deep and 5 foot wide.
HLW/231=G
H=2'=24"
L=5'=60"
(24"(60")(W))/231=500
(1440W)/231=500
231(1440W)/231)=(500)231
1440W=115,500
W=115,500/1440
W=80"
W=6.6'
Thanks fur formula all.
OT: What does QFT mean?