I am using a six bulb 48'' Tek light with all Giesemann bulbs that are less than a year old. Two actinics, two aqua blue+ and two midday. My problem is that nothing is growing nor is it dying and the tank color is very yellow and nothing "POPS''. The two actinics look fine it's the midday and the very dim aqua blue that I need sugestions on replacing. Again I would like to start adding more things to my tank and want them to grow and stand out.