Can the AI Sol cover 20"?

[GreenMandarin]

I just bought a 24 gallon Cadiff aquarium and was looking at the aqua illuminations sol blue for lighting. THe tank is 20" long and 18" deep. I am planning on keeping mostly sps. If it wouldnt cover 20" and I switched out the optics to 70 degrees would that reduce the PAR enough so I couldnt keep sps? Thanks for any advice.

 

[TimothyJ]

I have the AI Sol Nano covering 18 x 18 x 18 without a problem. The Sol should have no issues with 20". I keep SPS, LPS, softies and clams.