What are some chaeto/algae reactors that are external out there?

[Flameback Pair]

Especially ones with small footprints? I don't want to do a DIY.

 

[mrvn]

Pax Bellum N18 is pretty small.

 

[Flameback Pair]

That's ridiculously priced.

 

[Hitmans reef]

Simple diy best way to go common reactor ur comfortable with the price of 2lf common enough red and white leds off of amazon tape around whole thing and install chaeto ..... honestly like $75 tops

 

[sundog101]

https://www.marinedepot.com/AquaMaxx_Hang_On_Algae_Reactor_Package-AquaMaxx-UJ5533-FIFRAS-vi.html