Both are too low. Alk should be closer to 10 dKH and ca 420ppm. Did you test magnesium? What brand salt do you use?
Sorry it me awhile to get back. I had my magnesium tested and it was 1200 and cal. was up a little to 380. I'm thinking this is to low. I was told by LFS to raise the mag. and then my cal. at that time I start just mantaining levels. Sounds like a plan, but is a good one? And how high do I want to raise the levels?
as far as the ph goes, I dont believe anyone mentioned this yet but you said you checked it right before the lights came on. Your reading will generally be a little low at that time so I would check it right before your lights go out, you will get a better reading at that time. As far as everything else it sounds like everyone hit the important stuff to make your coraline grow.