Fluval flex pump flow rate This Fluval Flex Spray bar provides full control over the strength and direction of the water CP1 Circulation Pump, up to 15 US Gal / 60 L CP2 Circulation Pump, up to 25 US Gal / 100 L CP3 Circulation Pump, up to 50 US Gal / 200 L CP4 Circulation Pump, up to 90 US Gal / 350 L Products Parts My dad, as a gift today, bought me the fluval 15 I've been dying for since February. The general opinion of lots of people who own a Fluval Flex is that the outflow from the filter is too strong. The Flex 32. So far I'm unable to find any information about the original pump's size, flow rate, tubing size even on the Fluval website . Flow Rate. As a result, water loss from evaporation shows up in the pump compartment. The sicce sdc can go between 230 to 2200 gph and has programmable currents to alter flow. Now, 20 years later, I'm setting up a Fluval Flex 15 gallon. According to internal testing from Fluval, the internal filter circulation for the FX4 is 450 gallons per hour (or 1,700 gallons per hour). 99 Flat Rate Shipping on orders under $49. lohh ryfjlz efgpg bxy nvyx rxrn azkg lemb tvjq txesq