Very nice chronical Lynn.
Sorry you lost your clam,

they require very stable and mature system, one year old or more. How big is your Engineer Goby, I had two that were 10" before they had to go back to the LFS as thety outgrew and over tunneled my tank.
I sleep 5 or 6 hours a day by the way.

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Currently tankless.
20 Gallon mini reef with mated pair of Maroon Clowns given to Rougiem!
80 gallon reef given to Rougiem/Wooster HS.