While Ryan is always busy digging up the liberal media, elitist obscure aquarium products from behind the Iron Curtain of Eastern Europe (do you really need a tool to remove starfishfrom a tank?), I, Jake Adams, am in these streets day in and day out getting the dirt on real aquarium products that you can use on the walmart Regent canister filter that you got for your 55 gallon oscar tank. Case in point is the flowmeter kit from economy aquarium product manufacturer ToM (with 2 capitalized letter in the name it has to be good). The rotameter style kit displays a decent reading resolution up to 500 gph/1900lph. The $30-ish package includes mounting bracket, clamp, the meter itself and the biggest dog-gone suction cup we’ve ever seen. The flowmeter has a 1″ barbed fitting for flexible tubing and 1.25″ threads for hard plumbing applications. Topping out at 500 gph we don’t see this being useful for too many applications but if you’ve got a recirculating protein skimmer, a flowmeter is a useful tool for dialing in a desired residence time. The catch? The brass weight used for indicating flow may not be the most corrosion resistant choice for marine use.