Great questions! In fact, I was about to post a very similar set of questions regarding the need for actinic use for SPS
(softies) & LPS
Given adequate light (which will stir some controversy), I have run my T5s and actinics in tandem for periods of 10-12 hours. On a 20g long and in a 65g with good growth results. In fact, I've gradually cut back the 20g photo cycle down to 9.5 hours and everything seems quite happy.
Not wanting to hijack your thread but add to the discussion, if I were to rephrase it your questions:
- Is the actinic necessary for growth and color?
- Or, can it be used only for viewing hours and still get great growth and color in softies and LPS?
Has anyone experimenting with cutting back or leaving off the actinics?