I have a picotope also. I am running a 24W Odyssea as well as the 9W stock lighting. On the back I have an AC30 and the stock picofilter for flow and circulation. I have a hydor 7.5W heater that keeps the tank between 74-78.
As some of the others said, evaporation is a huge issue. I topoff in the morning and at night. I only have about 4lbs of live rock (almost rubble) so there is room to aquascape. I have 3 astrea snails, 1 blueleg hermit, several zoos, GSP, ricordea and frogspawn all living happily. I plan on adding a few sexy shrimp soon, but a fish would add too much bioload in my opinion. A clown goby Might have enough space but it is pushing it. You will have to put some pictures up when you get it set up though.