This is a temporary set-up, with an old tank I am looking after community fish for a friend who is in hospital. Its set up in the garden and its quite interesting the way sunlight and the long days affect the plants and fish, all tropicals more used to 12 hours light and dark. There is no co2, some soil from the pond, gravel and sand is the substrate no artificial light and the tank is in semi-shade its been going since late May. I took these pics today, the pearling looked great and I wanted to share the pics. Thanks all for the great info on the site.