Set to recirculate livewells and fill with enough very warm water to run the pumps. Add a cup of simple green or other biodegradable cleaner and let circulate for five or more minutes. Stop, drain, and fill all the way with fresh warm water and let the pumps recirculate until well rinsed. Drain and voila- No more stinky. Good luck. Don't use bleach.
Haulin' Bass since 1972