I changed the background again. More sun exposure as spring advances was causing more algae on the glass, and Laddie spent longer hours just hanging in a corner. I really put the background up again to block some light- it's a panel of white cardboard, tipped outwards at the top against window pane. Like I had on the old 20H for Perry, but with a white panel instead of black. I like this better. And Laddie- is now active again. Cruising around the tank inspecting things, coming up to see what I offer to eat, even swimming along the length of the front glass when I walk by. Was he feeling exposed and thus stressed out by the excess light, after all.
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