I have a 48” 100% blue RB Lumenbar and a 48” HO UV RB Lumenbar if you are looking to add to your Reefbreeders. $280 for both.
I’d be worried about MH heat and a hotspot with a 10” tall tank (50g lowboy). I should change the header to LED/T5.I have a 36” MH/T5 combo light. 200$