Another coat of stain, and three coats of "Minwax Helmsman Spar Urethane Clear Satin Spray" finish. I wont go into all the details, but by | The Planted Tank Forum
Minwax Helmsman Clear Satin Oil-based Varnish (1-quart) in the Sealers department at Lowes.com
How to prevent spar urethane from drying sticky : r/woodworking