minnow storage

[mullinsb2000]

I purchased 20-gallon blue barrel to use to store minnows to boat slip. Going to lock the lid, since public access Stahls,

Question is, how should weight be added, to submerge? What should I use? External or internal?

As always, you folks will steer me right. Thanks

[DockShootinJack]

I would weight it on the outside myself