Just reviving this one a little bit. This information has been extremely helpful as I work to put together a new tank that will be only T5HO (likely 4 bulb over 75 gallon). I didn't realize the color that the standard Sunblaster 6400K bulb can put out with the combinations based on the above posts.
I like the Giesemann Super Flora, as well as the Tropic 6500K. The Tropic 6500K looks to have a more desirable relative intensity graph than that of the Sunblaster (which seems only green heavy, with a slight yellow tick as well).
My initial thought was to run something like this (no order yet):
Giesemann Tropic 6500K, Giesemann Super Flora, Power VEG 660, Giesemann Super Purple
This give me some daylight, as well as 'blues' and 'reds' to balance each other out.
I can grab all the Giesmann from Bulk Reef Supply today- and should be able to source the Power VEG 660 from the garden center not too far from me.
Still learning here, and open to conversation and feedback!
Giesemann Tropic 6500K
Giesemann Super Flora
Power VEG 660
Giesemann Super Purple