I had the old Sol Blues back in the day,,, bought the Hydra upgrade kits for them, to give you some kind of time frame,,, the upgrade kits were offered and had been out for,, say 1 1/2 years before I bought the upgrades,,, and have been running them ever since,,, they are just wore out because of time and need replaced,, I contacted Aqua Illumanations about a upgrade kit for them,,, no upgrades available,, not even sure I can buy the same pucks that are in the light now,,, I am thinking its time to upgrade to Radions ,, which is what I am working on :)
Just to give you a idea,,, readings taken with Apogee: White LED's running at 56 %,,, after this test,, I moved them up to 60% but haven't re tested yet,, lights are 12" above water,,
2 " under light 2500,,, this number surprised me,, but I am no expert,,, I guess its right
5" under light 800
at water level,, but sensor out of water 237
just under water 165
SPS level 90