A couple updates:
1. Hanna Calcium checker -

. Bought it "used" but brand new in the box from a local reefer. First reading was 600+, second reading was 563! Since I'm not dosing anything to the tank, I figure it may be because the Instant Ocean Reef Crystals salt I'm using is causing the high calcium readings. I may try a new salt mix next month to see if it comes down.
2. Livestock- The midas blenny (now named "Frank" because of his blue eyes) sure is fun to watch! He swims around using up a lot of the available swimming space and gets along just fine with the clownfish; no aggression between them. He also loves to make new caves and pass-throughs under my rocks so I'm letting him have his fun. Acan's are showing a good feeding response to a small pellet placed next to their mouths, hammer predictably is not interested in food.
3. CUC - was 5 blue legged hermits but I added 5 more hermits and 5 trochus snails. I also count the sand sifting star as part of the CUC; he's doing great and really working on those diatoms!
4. Ugly - tank is now going through an ugly stage of diatoms on the sand and green algae on the rocks. The CUC is doing a pretty good job of keeping it in check and the water parameters are mostly stable, so I'm going to let it play out and see how it does. I'm reducing 2x daily feedings to 1x daily feedings to see if that helps the nutrients from getting out of hand.
5. Interaction - the tank sure draws a crowd! My kids kiss the fish through the glass at night before bed, they steal my phone to take photos and videos of the fish while I'm sleeping, and my wife fights me to see who gets to feed the fish. I also catch her sitting in front of the tank at odd hours just to watch what's going on. Success!;Happy