Well, I was in for a bit of an unpleasant surprise when I got in to work. I found hair algae growing on the sand! I've never had hair algae before.
A co worker of mine 'helpfully' added a green chromis and two damsels to the tank. I siphoned out the affected sand and removed the fish. I believe that my setup has reasonably good filtration but one little mantis places a surprising amount of bioload on the ststem. Fortunately things are now looking more as they should. I have let everyone in the office know that I will stuggle to care for the tank with my own meager skills and I do not need anymore 'help'.
I have tried fish myself in the past. But this experience has made up my mind that this aquarium is not a 'fish tank' - it is a nano reef showcasing a mantis shrimp, that's it.
Cheers,
- Chad