mounting height

I am planning to start a frag tank with the 48" x 24" x 12" dimensions, and am wondering how many XR15s do i need ? I have an initial plan of 2, but wondering if they are sufficient. The frag tank will be accommodating mostly LPS and Zoas. Also what would be an ideal height to mount those XR15s...

First post in the community [And brand new reefer] - Please be kind! I have what I think is a unique challenge / question I have never seen posted.... I have a new 122cm (Odd width I know) x 50 depth x 50 height tank coming this week..... which is being slotted into a space under a wall...

How high are ppl mounting their 48-V2s for their 4’ 120 gallons? Going to go with a hanging option. SPS/LPS new build. I was thinking about 12” from what I can read but I haven’t seen any direct recommendations. Dimensions and optics below. Thanks! Dimensions 43.3″x8.5″x1″ Wattage at Full...