I guess there's no more need to post anymore graphs, now that the aquarium has matured. I've added some rowaphos yesterday, and that's coming down. I'll do a 15 % water change later tonight.
Three days ago, I added some critters: 2 candy shrimp, 1 cleaner shrimp, 3 strawberry snails and 3 burrowing snails. They're doing great, but the cleaner shrimp has vanished - i think he's moulting somewhere.