I am one of those, I ran viparspectra, got drunk and bought 4 g5 xr15 pros. I’ve had them on my tank since dec 31, at first I was unimpressed. However I have noticed better colouration in all my corals and growth has seemed to increase on my encrusting montis, sunburst monti, and a few of my Millis. my alk consumption increased. I never did a light acclimation when I switched.
are they worth 10x the price? I’m still undecided. Viparspectras definitely throw out my par. I have the radions at 100% intensity and 12” down I’m getting 250-300 par. Something that the viparspectra was able to exceed at 72 blue, 18 white.
the viparspectra are good lights. I was getting decent colour and growth. I actually put one back on my tank,
i Have my xr15s set to the brs spacing for 48” tank. Mine is 60”. So I have one set in the middle of the tank now between the two sets of xr15s.
also I had to build a canopy. The xr15s light spill was far too much for me handle.
I may purchase another xr15 or 30 down the road...I do quite like the lights now.
I also forgot to mention I do like my viparspectras too, I have 4 of them, and I intend on keeping them.