Thanks to everyone for the tips, and advice. The smell is mostly gone now.
Removing the carpeting will be a big job.
This 11 foot by 11 foot room is residence for my 125, 65 High, 29, and 10 gallon tanks. My "L" shaped computer desk is in here also.
My wife wants me to just cut all the carpet out, I can get to, and then coat the floor with a durable paint.
I think, once the weather warms up, I need to just bite the bullet, pull everything out of here, and lay linoleum, or ceramic tile.
I need to try to idiot proof these aquariums. This is my friends new 75 gallon stand. The tank is sumped, so I put a plastic liner in the bottom. I didn't get a finished picture, but the white liner is glued down, then 4" side pieces were glued in and sealed with silicone.
That gives it a 15 gallon containment!
I have been using this stuff to moisture proof the wood in aquarium canopies. I figure the white helps reflect the light too!
Here is her finished 75g canopy, with Finnex Ray II light installed.
This little flooding disaster was caused by a snail, that crawled up on this float, and blocked the vent hole.
That caused it to drop, restricting the water returning to the sump.
The pump then pumped most of the water out of the sump, and into the tank, causing it to overflow!
I tie-wrapped some aluminum window screen, around this so it can't happen again.
I should probably just swap this over to a Durso drain.
Tomorrow, I think I will look these tanks over thoroughly, and do a "What if? and worst case scenario" evaluation.