I have a interpet 48litre tank. It's heavily planted, all the plants are growing nicely. On the lid the is space for 2 bulbs. I have a lED day light and a blue moon light. I don't use the blue. My question. If I get rid of the blue and replace it with another day light of the same watt will that double up the total watt? Currently only have a 7 watt bulb but have seen 11 watt bulbs available. Will having 2 make it 22 watt?