I'm tired this morning, worked about 14 hrs yesterday trying to change out an AC system , with the air handler in the *%^_("! attic. Just finished my first cup of coffee....

I'm with Jackalope, I'm about 1/2 deaf...the echo didn't help or the pitch of her voice. The hair and the thumb ring were a distraction too. (I must be getting old)

I heard her say, they had a 'bio-log in the sump'....doesn't the bio- just change ammonia into one of the N's, not both ? (never remember which one comes first) @ 1:27 mins
-I didn't see any air lines going into the sump, I would of added some.

Stucco, I thought she said they 'test once a week' for ammonia, nitrates,ect (?) @ 3:08 mins

-She mentioned the 7 or 8 fish were small/tiny...wouldn't think they would get much nutrients from that (?)
-The bottle of stuff she held up....is it safe for fish ?.....too tired to research it.
-The thing I did notice, from a construction view point is.....they laid the concrete blocks on their 'sides'. This greatly reduces their ability to carry a load.