Recirc skimmer pump flow ?

[electrotech]

I just bought a used ASM G3 that is modified for recirculation. It's using the sedra 5000 pump for recirc. Whats the recommended feed pump flow rate for this? I'm probably going to get a DC pump for it which is adjustable flow just need to know if the DC-3000 is enough at up to 800 gph.

I will have a separate refugium tank that is split off the main return to the tank and runs about 300-400 gph that drains into the sump, I thought about gravity feeding the skimmer off that but someone said gravity feeding a skimmer is hard to control.

 

[Aquatron]

I believe that skimmer will have no standard feed rate since it was MOD that way? One time you system volume is a good starting point")

 

[mcgyvr]

IMO..Just a few times display volume per DAY for the feed pump.

 

[MorganAtlanta]

If you try to put too much through it, it won't really be a recirculating skimmer. DC1200 would be more than plenty. The G3 body only holds a few gallons, so figure out how much contact time you want. 180 GPH would give about 1 minute contact time per pass, so scale if from there.

Also, I had good luck with mine switching the Sedra 5000 to a Sicce PSK 1000.

 

[ca1ore]

I run an ASM G3 as a recirculator (though I also replaced the sedra with a sicce pump, PSK 600, as I just couldn't stand the noise) and feed it about 50 gph, give or take. I really like the ASM skimmers; good solid design without all the questionable innovations of more recent vintage.

 

[stancfii]

The recirc needs 1-1.5x your water volume in turnover. If you have 100 gal of system volume, you only need to pump 100-150gph through it. With that little flow, the best thing is to run a line off of your return pump and control it with a ball valve. You could also feed the skimmer off of gravity on your return, but dialing it in would be a little more of a pain.