Okay for the Price.
Definitely not Silent* impeller hum is/was expected and noticeable, would be dampened in an enclosed cabinet, Would likely annoy bedroom environment. Will transfer slight unit vibration.
The impeller in both of my purchased units makes occasional rattling sounds even after silicone grease application my guess is the non-fixed impeller to spindle assembly making clicks with any changes to pressure/or contact with impeller blades and housing. This might stop after a longer break in period.
The UV addition should only be used temporarily for green water/disease/parasite outbreaks, as the internal plastic is not UV stable (not 24/7).
Build quality is adequate, though flimsy plastic in fittings and locking mechanisms, so care is advised.
Hard 90* bends on outflow spray bar assembly restrict flow rate (I would not recommend not using spray bar for same reason) 1400l/h questionable, @ 35w not outstanding performance, but acceptable.
Included filter media kit is sub par quality. Better than nothing , but I would personally upgrade.
Hoses are good. thick walled same diameter on input/output and long enough for most tank setups. In tank fittings are matte black and the additional surface skimmer is a nice optional extra. Suction cups are good.
Both of my unit when setup correctly showed not signs of leaking.
Even with all of the above it is still represents good value considering the unit costs 1/5 of some of the name brand canister filters, doing more or less the same job.
With the saving here could go towards a better quality filter media.
Can't complain for the price.
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Verified purchase: Yes | Condition: New