external pumps

[Fish4life]

i wouldn't count on a return pump to provide flow to the tank. plumb a closed loop or use koralias's/tunzes for in-tank flow!

MissT's recommendation seems to be more than adequate, plus as an added bonus its variable. Us reefers love to tinker!

cheers,

kurt

[captexas]

As Alton brought up, you need to find out what the maximum flow rate is for your drain(s) from the tank to your sump. Doesn't do any good to buy a pump that will push more water than the drains can handle. There is a calculator on RC where you can enter the diameter of your overflows/drains and it will show you the estimated gallons per hour it can handle. Once you have that number and the pump height (head loss) figured out, you can come up with what size pump you will need. That will help narrow it down to which brands and models to look at.

[DBlackman]

Very good advice... that perspective is more often over looked.

As Alton brought up, you need to find out what the maximum flow rate is for your drain(s) from the tank to your sump. Doesn't do any good to buy a pump that will push more water than the drains can handle. There is a calculator on RC where you can enter the diameter of your overflows/drains and it will show you the estimated gallons per hour it can handle. Once you have that number and the pump height (head loss) figured out, you can come up with what size pump you will need. That will help narrow it down to which brands and models to look at.

[LoneStar]

Go with Sequence pumps. You won't regret it. The most quiet ones on the market.

[envy]

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this is the tank i am looking to use the pump on. the top left hand corner has a 2inch hole drilled and looking to get another done next to it but maybe a 1.5. they will lead to the socks in the sump. the two holes will not touch until water get to sump. just in case if one gets cloged i have the other to move the water while i fix the other. let me know what ya'll think

[MissT]

That's the great thing about the snapper. You can valve them down to 300 gph and full throttle at the outlet is 2400gph... Wide range for the same money you'd spend on an 1100gph Iwaki... Plus there's nothing better than deciding to upgrade and find out that some of your equipment actually can be used.

As Alton brought up, you need to find out what the maximum flow rate is for your drain(s) from the tank to your sump. Doesn't do any good to buy a pump that will push more water than the drains can handle. There is a calculator on RC where you can enter the diameter of your overflows/drains and it will show you the estimated gallons per hour it can handle. Once you have that number and the pump height (head loss) figured out, you can come up with what size pump you will need. That will help narrow it down to which brands and models to look at.

[envy]

after doing more research on that snapper that was the main thing i really like and am leaning toward it. does anyone know the cons of this product. have't found any yet.

[mikedelgado]

I purchased a sequence barracuda for my 215 and wasnt happy with the humm at 1st. the flow this guy creates even w almost 6 feet of head pressure is amazing. I am going to add a couple of wavy seas and elliminate my in tank wavemakers