the mix is 1/3 peat, 1/3 water, 1/3 glue or close to that. im not sure if that formula is correct with the flavopol. youll just have to experiment with it. youll want to let it dry for a week or so to make sure its totally dry. as for the lighting, its not a big tank so i just have 3 flourescents on there that are 18". they hang from the cieling and are about 4 or 5 inches from the top of the aquarium. i had glass cut to fit the top perfectly to create a tight seal. the glass is cut just about in half for a lid. works great for dart frogs, but caudates, i would be careful doing this type of lid. course, ive never tried it so im not sure. anyhoo, good luck guys!