ya it is a misreading by the sensor. heavy blue in the right range will scew the results a bit depending on what is used to measure it.

Steve

Ok. He never had any 20,s in stock anyways. Likely run the 10K for now but will have to be very careful with my corals if going to that high par of a bulb. If the 14 had a little more par, I would start with one of them but just to low. We were talking about switching to the Reeflux 10K later, as apparently they run with a hint of blue as compared with the SA 10K but I assume a bit less par also.