How much flow?
JBL is refreshingly transparent about its filter models’ flow rates – if you read the instruction manual!
The highest figure for flow that’s cited – 900 lph – refers to the pump running idle, which is to say that it can provide that much flow in the absence of hoses and without filter media.
Once the canister is assembled with media and the hoses are in place, this flow rate drops off substantially. JBL reports the flow of the e902 with 1.5m of hosing and media in place as between 380 and 450 lph. This is important to know when deciding on what size tank the e902 is capable of filtering. If you want a 5x turnover in your tank, as some aquascapers do, then this filter will be suited to a tank of up to 90 litres. Realistically, I suspect this filter will cope nicely on a community tank of around 150 to 200 litres.