:eyeroll:
I read your site and it contradicts what you've been saying. Spectrum curves are excellent to see what kind of light the bulb will produce prior to purchacing, if you have the know how to read/understand them.
According to your "expert" website the blue+ is a better bulb for color over the actinic when using a MH (which the OP is using) which will wash out any actinic bulb.
Good try though!
From your site:
Actinic Lamps
Actinic lamps peak around 420nm and provide violet light and some UV range light that is good at causing fluorescence, mainly noticeable in the green range many LPS and soft corals have. The good actinics IMO are UVL Super Actinic, ATI Actinic, Sfigioli Super Blue Actinic, all which have a slightly bluer look and the Giesemann Pure Actinic which is more of a violet look. I think having an actinic running with a blue lamp for dusk/dawn looks nice but once all the lamps come on they really don’t make much of a difference if you are using good blue lamps so I no longer use them.
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Blue lamps
Blue Lamps peak around 460nm and provide a high level of blue light and a good amount of PAR. They actually have more PAR than daylights in some cases. They cause good fluorescence in most colors other than certain greens and are excellent at blending out the greenish yellow tint of 10K halide lamps. The good blue lamps are the ATI Blue Plus, Giesemann Actinic Plus, AquaScience 22000K Blue, Narva and Sylvania blues and the UVL 454 and Ice Cap Twilight. The Helios Super Blue is a nice lamp if you can find it.
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Daylight lamps
Daylight lamps provide a white, yellow, green or even pinkish white light. You should try to include at least one of these lamps in your mix to provide the Yellow and red spectrums needed to provide accurate color representation in your tank (the ATI Purple Plus or KZ Fiji Purple are acceptable substitutions). Of course that is up to your personal taste. The good lamps are the UVL Aquasun also labeled Ice Cap Reefcrest(which has a slightly pinkish orange tint), GE 6500K Daylight, AquaScience 15000K “Special”, Giesemann Midday and the Current 10K is OK. The AquaScience special is probably the only one that would look acceptable as a stand alone lamp but as far as being art of a mix I can take or leave it. My preference is the GE if you have a Fiji Purple or some other lamp to boost red, if not the Aquasun/Reefcrest does well.