I run 2 50's and 3 48" or4 uv/v bars on my 59×30×21.How much improvement do you think you had with the addition? I'm considering one of three options at this point. My footprint is 48x39x25.
1.) Two 48" Photon V2s,
2.) One Photon and Two Orphek Natura Icons
3.) One Photon flanked with Two 48" T5s.
Currently I have one Photon and one Orphek. The build is next summer.........
Each or4 bar is equal to 2 t5's.
2 48" photons and 3 or4's of your choice would work well on your system and provide complete coverage.
Here is a look at mine.