wait! a 28quart tub can't house a Newfie!
i still have my original ZooMeds UTH on my original enclosures - 2 glass tanks. they've worked fine in my experience. Ultraterms are better tho. the only thing i don't like about them really is how their connectors are connected to the heating element.
^ see that plastic thingy. it creates a lump.
i also agree w/ not taping them to the tub but to a separate surface. it makes it sooo much better to clean.
not much. the top of a hide?
Edit: or better yet, a sky hide!