I have no idea what Rotenone costs, but since he is down to less than one acre foot of water I wouldn't think it would be too expensive.
Can someone give us an estimate of how much that would cost?
Around $85-$95/gal, depending on the source and quantity. But, rotenone is Fed restricted-use pesticide, and requires a license to purchase/apply.
1-gal should easily treat 1 ac-ft - and probably a little more, depending on the targeted fish-species and the water's level of turbidity. Lastly, treatments can be a little tricky if there are deep pockets of water, and rotenone is not thoroughly injected throughout the water-column.
