The guy I bought the 5 and 2.5 tanks from was the 2nd owner. He'd never used them. He wanted another tank much larger that the original owner wd only sell in a lot.
There were reptiles in both the tanks.
Yesterday's cleaning didn't eliminate the musk smell from the 2.5 so today I papertowel scrubed it with vinegar, let it sun dry, washed it with Dawn(my neighbor gave me some -- we use Ivory at our house-- rinsed it 6 times, washed it with 10% Clorox, rinsed it 6 times and used decholorinator on it for two of those times.
It's now air drying.
Now feel paranoid that an herbicide from the lawn might have contaminated the tanks while they were sun drying.
Geez, brain, chill the eff out!
Just going to wash and rinse them again to be sure.