Well, I had my first major failure... CO2 regulator failed in some way where all of the CO2 left the 10lb bottle and vented into the sump area.
The PH of the tank was 6.2 in the tank and everything was VERY unhappy
. I immediately increased surface flow and held a tunze powerhead close to the water creating a crazy amount of bubbles in the tank. I also added a couple shots of BRS ALK to help boost it a bit.
A couple of losses so far are: 1x blue streak cardinal (other fish are not showing up yet) and my trusty light skirt that suffered major damage while thrashing around trying to get fresh air into the basement (was stepped on with vengance).
I guess I'm creating this post to get some good information from people who have suffered a similar experience (what's next?) and advise me on what regulator to get for my C02 bottle (current one is a Milwaukee with solinoid).