Yeah - I like all the other suggestions too!
My two cents on the subject:
I use Frost King brand (this brand works the best), EPDM Rubber Weatherseal self stick tape - comes in white, gray - and probably black though our Depot does not have. The model numbers are V27W and v27G, it is 15mm x 8mm in 10' lengths. Install one piece around the top of the Rubbermaid container (not the lid), joining in the center of the handle section of the tub. I replace this seal after 2 or 3 clone or veg sessions.
Below is a picture of similar EPDM weatherseal from MD in black, this brand also works, but it is slightly thicker (though the specs do not reveal this), but does not last as long.
No matter what you do - you should be prepared for leaks... maybe not a good idea to run our systems on nice wood floors, or carpeting!