I did look into this one recently after I mad a DIY version and some people asked what was a good alternative.
Is the light and the filter on different cables or all in one? Do you have to push the light button to turn it on or can you put it on a timer?
The original light is lost, so using and rgb light unit. That I used on the Palu tall cube from a few years ago. It has red, punk, purple, blue, lavender, green, yellow and orange leds.
The original light unit doubled as a USB hub and you could use it as a charger.
The filter and light have separate USB cables.
There is also room in the sump for a Micro heater if needed for the marine side. as have seen a few marine scapes in this.
The original pump is 180lph I am using a 2lpm pump as wanted to over filter it.
Since this model there are a few different designs now. And some have tubular inlets with multiple weirs for better water ingress to the sump area.
And bigger sizes, and range from £35 and upwards of £60. Cheaper if you buy from China etc or Aliexpress.
Think a few people on here have used some of the other designs since the original Cunzo became popular from Oliver Knotts pico challenge.
I have used clear straws to direct the flow of the outflow. And in the inlet weir to stop the gurgling sound of water.