AcroporAddict
There is no substitute.
My chalice tank is 30" x 30" x 24". I had a LB Mini/CV EB and Helios 20K bulb on there, and recently switched reflectors to a Sunlight Supply Reef Optix 4 hammertone style reflector to give a more scattrered light to the chalices. My PAR is lower, but the light has a broader spread, and the reflector is almost a 23" square in measurements, so it has a good spread.
Dave
Dave