Why are lights so bloody confusing. I've been trying to grow different plants in my 110l for ages with little success, I've bought plants and have had plants donated from other generous members just to watch them disintegrate or turn brown. I am putting my failure down to my own stupidity as I have only been using the 15w bulbs that come with the tank (Juwel Delta 100). I'm going tomorrow to pick up 2x 24w bulbs and was just wondering if this would be enough light for healthy plant growth without having to mess around with co2 and other stuff that's over my head? Also if anyone could tell me the difference in the lights themselves eg. warm & daylite, do I need a combination of different bulbs for my plants to grow?