I got one of these 5 stage wet/dry upright sumps with built in skimmer and auto fill
never seen water sparkle like this keeps all my parameters in check , it's the size of a computer CPU ,everything comes apart easy for cleaning , I changed out the bio balls with rock rubble , I did just up grade the return pump from 700gph to 1200gph
I also run my 90gtank and 37g in sequence took some work getting the 37 bottom tank to function right but now that its primed it's great,
pump don't work any harder an handles the water flowing through it
I also added a small led
strip inside one of the compartment buckets so I could grow macro's, the one thing I did swap out as soon as I got it was the hoses as they are a hard plastic like a vacuum hose , they would have split open in about 2 weeks as cheap as they were , but otherwise a nice all in 1 sump at a affordable price .
cleanings is a breeze as you can take the sump tub out