Dunno if it is a stupid question to ask but anyway.. I have a 30gallon aquarium which sits in my garden under a shed with natural light thought direct sunlight doesn't fall on the tank. I've added java moss, valisneria, dwarf sag and some hygrophila into the tank. I don't have a CO2 system. Will I have to add additional lighting or is natural light enough? I live in India where it is summer right now and it will be pretty sunny until late June. Kindly help.