IMHO, you would be well served looking into the Maxspect Ethreal Infinite. Maxspect has been building SPS capable lighting since 2009. I am 100% confident that in a comprehensive lighting test, it would definitely perform at the top tier.
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My issue with the Ethreal is the rear mounts. I cannot rear mount lights due to the unique slim overflow the tank has.IMHO, you would be well served looking into the Maxspect Ethreal Infinite. Maxspect has been building SPS capable lighting since 2009. I am 100% confident that in a comprehensive lighting test, it would definitely perform at the top tier.
Well that's somewhat of the wrong approach.It’s almost 2026, and reef lighting has come a long way.
You’re starting a brand-new mixed reef build (not your first tank).
Tank size: 48” × 24” × 21”
What lighting would you run and why?
Maybe I’m just old school, but T5’s and metal halides just seem to hit the spot. Tried and true. But the halides are getting harder and harder to source. And with the T5, I have no problem hitting high par numbers and the best growth and color I’ve received has been with this combination. But all in all, it’s a to each their own, asking everybody here about their lighting preferences like asking what everybody’s favorite toilet paper isIt’s almost 2026, and reef lighting has come a long way.
You’re starting a brand-new mixed reef build (not your first tank).
Tank size: 48” × 24” × 21”
What lighting would you run and why?

it’s gonna vary, but there’ll be like one or two that tend to be a bit more popular,
cheersReefi has this option as well. I know I have seen posts from Daniel on FB about this. I do not know all the specs or down sides I do know it limits how much power and how many lights you can run. I am going to ball park it here the power supplies are 300w meanwells each light is capable of 280w but I dont know in what world you'd run them at that output. So two would be capable of up to 150w each thats still going to be a lot of par output. Can you daisy chain 3? idk. I would send him an email to get more details if this is an option you can not live without.Reefi Uno and ReefBreeders Meridian tied for first place! The one power supply on the Meridian does sound good.
Not to mention cost of large wattage power supplies.Reefi has this option as well. I know I have seen posts from Daniel on FB about this. I do not know all the specs or down sides I do know it limits how much power and how many lights you can run. I am going to ball park it here the power supplies are 300w meanwells each light is capable of 280w but I dont know in what world you'd run them at that output. So two would be capable of up to 150w each thats still going to be a lot of par output. Can you daisy chain 3? idk. I would send him an email to get more details if this is an option you can not live without.
For a sort of reference I run 1 Reefi with the 120 degree reflector at about 117w. I have about 300 par 10" into the water. When I first set this light up I ran it up to about 200w and had over 400 par on the sand bed. I did have the 90 degree on at first but could see that was not enough spread to cover the 28x28" of tank surface, I did pull a par test with the 90 and at 200w it was well over 600 par on the sand. On the 180g I intend to run the 3 reefis with their own drivers just to not limit my power availability but I will also most likely be using the 90 degree reflectors and I doubt I will be using more than 100w/light. I also think it would not be a great idea to max out a single power supply.
T4hoIt’s almost 2026, and reef lighting has come a long way.
You’re starting a brand-new mixed reef build (not your first tank).
Tank size: 48” × 24” × 21”
What lighting would you run and why?
You mean the ones that come free with the light? You do realize that they can be mounted other ways as well right?My issue with the Ethreal is the rear mounts. I cannot rear mount lights due to the unique slim overflow the tank has.IMHO, you would be well served looking into the Maxspect Ethreal Infinite. Maxspect has been building SPS capable lighting since 2009. I am 100% confident that in a comprehensive lighting test, it would definitely perform at the top tier.
There is ceiling mount options? I thought it was rear mount only.You mean the ones that come free with the light? You do realize that they can be mounted other ways as well right?My issue with the Ethreal is the rear mounts. I cannot rear mount lights due to the unique slim overflow the tank has.IMHO, you would be well served looking into the Maxspect Ethreal Infinite. Maxspect has been building SPS capable lighting since 2009. I am 100% confident that in a comprehensive lighting test, it would definitely perform at the top tier.
You think 2 Kessil’s is enough? I always through single source lights like that caused a lot of shading.We sre officially 30 days from a relocate to coastal carolinas and that means i can finallly do my build which will be a 48x24x20 tank. I plan on either using a pair of Kessil A500x Tuna blue of a pair of AI Hydra Edge 68's. really want to see the new AI's in person to see if the shimmer is natural or has a disco issue like so many LED's do. Thinking their new cluster design with that ring of whites in the center may have solved it for them.
It’s almost 2026, and reef lighting has come a long way.
You’re starting a brand-new mixed reef build (not your first tank).
Tank size: 48” × 24” × 21”
What lighting would you run and why?
We sre officially 30 days from a relocate to coastal carolinas and that means i can finallly do my build which will be a 48x24x20 tank. I plan on either using a pair of Kessil A500x Tuna blue of a pair of AI Hydra Edge 68's. really want to see the new AI's in person to see if the shimmer is natural or has a disco issue like so many LED's do. Thinking their new cluster design with that ring of whites in the center may have solved it for them.
Glad to see you jumped in on this! I went through your tank build thread about 2 weeks ago and saw you upgraded to the Meridian 45 from 4 Kessil lights.It’s almost 2026, and reef lighting has come a long way.
You’re starting a brand-new mixed reef build (not your first tank).
Tank size: 48” × 24” × 21”
What lighting would you run and why?![]()
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Loving my RB Meridian 45. BOT mounts are heavy duty and hide wire. That’s right only one wire. Plenty of power and adjustability. Low spill and low glare. Like the new shallow reef color, but it still does blues just right too!
Similar footprint to you and my par numbers are great.
Yes shallow reef has some extra white (4 vs 2 clusters per panel). It also has a significant amount of blue still. Can really pop the coral colors for evening blues, but fish and certain corals look better under more white spectrum. Feel like it’s close to the best of both worlds.Glad to see you jumped in on this! I went through your tank build thread about 2 weeks ago and saw you upgraded to the Meridian 45 from 4 Kessil lights.
I am sure they are great lights but Meridian just looks way cleaner.
You went with the shallow reef? I need to look at pictures as I do prefers a whiter spectrum for 4 or so hours while I am home from work.