It’s beauteous. I’m very anxious to get fish and corals into it, but the water’s warming up to liveability. Chemistry for these tropic creatures doesn’t work at life friendly rates until you reach 62 and it started at 58. So We’re trusting the lights to warm it—which it can do. The next question is how to cool it down and get the ‘heat budget’ balanced…

Sort of like making a planet behave…planets figure things in terms of albedo, ie, how much solar input does it reflect back into space— and internal heat from the core; and how much solar input it gets.

For a tank—it’s how much does the heater input, how much do the lights input, how much do the submerged pumps input, how much escapes via evaporation, how much radiates from the glass, the rates while the lights are turned on—and the rates during the dark cycle—not mentioning that we have 2 light cycles. And if you think I’m getting pad and par meter and thermometer and figuring all this out in numbers, nope, nope, nope. I’m doing it by setting up what has to run, and figuring out what has to increase (heater) and decrease (fans) for this to stay within a 1-2 degree swing day to night. Rock and sand are a heat sink: they hold the prior condition, and the more of that there is, the more resistant the system is to change; water holds the prior condition too, but not quite as efficiently, and not while it’s falling in air with wind blowing on it.

And my friend in the East is sending me an 18″x18″ box of rock. So there will be more rock coming next Wednesday.

As a footnote, we did break our diet and celebrate with a bottle of Champagne. Jane had weird dreams that didn’t make sleep easy, and, me, I just got a headache. But neither of us woke up 3 pounds heavier, so we’re happy.