I have a 2x39w t5ho sls retro currently. With 6500k 2x39 watts in my 30g I was able to grow HC, bylxa, and downoi without problems. Now here is the issue. I want to put this same fixture over my 38g and substitute one of the 6500k bulbs with an actinic for color and to lower my wpg of usable light. Would this lighting, 39w 6500k and 39w actinic now be considered a low tech lighting for my 38g? Is actinic light usable to algae? I would hate for my plants to only 39w while the algae is having a field day with 78w.