Lighting is all going to depend on budget. If I recall a 46 bowfront is 36 inches wide. So my recommendations are based on that.
As mentioned, most LED systems list a wattage, however wattage in LED does not equate to wattage in T5 and Metal halide. With LED the common reference point people use is par which requires the purchase or rental of a par meter.
Many of the LED reef lights will be sufficient for what you want. You’ll probably be looking at at least two fixtures for that size tank.
At the top price end: Two of any of these: Radion XR15 or AI Hydra 32 should provide enough coverage.
Mid Range Price: Reefi Uno 2.0 (should just need one but may have coverage issues at the edges unless you hang it a bit higher).
Low End: one: Viparspectra, two SmatFarm, one NiCrew 150, two Noopsyche or similar would work.
In the end it boils down to price, features, warranty and related support (or lack thereof), and ultimately coverage. In the low price point I didn’t specify too many models (some models will have better coverage, features, etc than others).
For example, the Viparspectra is 2 channel control and does not have an app last I knew. SmatFarm is 6 channel control but no app and as I have one of the G5 models, quite frankly the spectrum leaves a bit to be desired to really get that color “pop,” but it grows coral and anemones just fine. NiCrew, I personally wouldn’t buy another NiCrew product unless significant advancements have been made but that’s just my personal experience with the lack of control in the one light I’ve purchased (there have been several good reviews of the latest NiCrew reef light). Reefi Uno has a great reputation but the app and UI can be a bit dated looking.
With that said, almost all of the above combinations have a higher maximum wattage when ran at 100%. However given the par requirements (or lack thereof) of the various softies, you likely will not be running any of the fixtures near 100%.
I hope this helps!
