Those PAR readings are perfect for SPS corals.
PS, what meter did you use to measure the PAR? If you used the Apogee MQ-200 Quantum meter then you can generally assume the true PAR readings when measuring LED's is about 10-20% higher because the meter reads the blue spectrum slightly less. That is a very rough explanation.
In any event, I'd be very happy with those PAR levels. In my tank with 5x24watt T5 and 24Cree LED's at 700mA, I am getting the following PAR levels:
The tank is 18" tall, 30" long and 20" front to back. The water height is 16" from top of sand to water surface.
Some notes about the various numbers:
1. PAR measurements were made using the Apogee MQ-200 PAR Quantum meter. This meter underreads the PAR from narrow spectrum LED's (mainly in the blue section) by around 10-20%, so my PAR levels are probably a fair bit higher.
2. The T5 tubes, bar the actinic tube, are about 5 months old. When I put in new tubes I expect the PAR levels to increase slightly.
3. The light unit is suspended 7.5" above the waters surface. If I mount it lower, PAR levels get too high causing bleaching due to photoinhibition.
4. Numbers in
RED are PAR readings on the SAND. The 175, 265,175 are right against the FRONT glass. 175's are in the extreme corners. The 390-A is the PAR in the centre of the tank on the sand bed.
5. PAR levels 1" below the unit are in excess of 2500!!!
6. PAR numbers just below the surface of the water is around 1100!
I think the PAR levels in my tank is a bit too high as some of my corals have lightened up. So, I think the PAR levels you are getting is just about right.