@bimmerzs wrote:
If you have a deep tank with led's and sps dominate.....the optic's should be used imo. Without optic's you do "waste" a little light but led's put out a lot of light even at half power and you can also play with the height. Cheers said:What is a good source for information on the best PAR values for different corals? Also the different daily time periods with those PAR values for the different corals? I have seen where some have said that a PAR of 100 on the sand bed of the tank might be a good minimum, acceptable PAR. Thanks!
David