Ya, I'm only dosing the SP and the CV now. I am getting a teeny bit of cyano from using it (there in the afternoon, gone in the morning), but I hear that's normal in the beginning. The Zeo forums suggested I use ZeoZym too, but I don't have a skimmer, so I asked them back about that, and haven't heard yet. I really think the change in Kelvin made quite a difference too. I changed the bulbs on my tank to higher Kelvin, added two Emeralds, the tang (who may or may not be helping), and then my tank went from end of December to middle of March without a waterchange.
I started these Zeo additives in the middle of March. When I came back to see the tank in March (last time I saw it was NYE) the tank was significantly lower in Valonia. Now a month later and Zeo, an even bigger jump towards non-Valonia-ness. So...I'm led to believe the Zeo is helping too, but I think the biggest factors for me was the Kelvin change, and possibly the Emerald crabs, and possibly the tang. If the Emerald crabs and/or tang contribute to the control, they are slow to make a difference. Both are constantly picking at the rock. So...I'm not entirely sure. I did a lot of changes.
For bulbs, I was using one Giesemann Actinic+ and one Giesemann Midday 6000K. The bulbs were 10 months old when I changed them to one KZ Fiji Purple and one AquaScience 17,500K which is quite a blue combination. It's good for supplementing my current MH though!
The Valonia was at its worst during the 10 months of Giesemann bulbs, coming to a peak when I finally changed them out. I am fairly certain the low Kelvin was a significant contributing factor to the INCREASE of Valonia growth, I would not say the bulbs were the CAUSE, as the Valonia was already there when I put the Giesemanns in.