Very nice work Don! I like the idea with the hoses attached to the drains so you can vacuum the bottom. Mine are solid so I have to use a 5gal bucket to clean the bottom while the solid siphons drain the tank. I know what I will be changing!
I know exactly how it feels to have to wipe out years of fish, but it is fun restarting everything.
Good luck with you new Hans fish. That is the choice i would have made too, stendkers from the man!