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#1
11-04-2010, 01:28 PM
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I have a 75G with 30G sump, herbie with 2 1" bulkheads. I run a mag 9.5 full out. that would likely be 7-800gph. seems to work fine.
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#2
11-04-2010, 01:37 PM
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A high flow rate will mean you can branch off the return and drive other things such as media reactors. I agree with BlueTang<3 about throttling back a larger than needed pump, it allows you control over the flow. I'm a huge believer in keeping the flow below the rate the skimmer can process, you don't want water ripping through the sump and back in the tank without skimming/cleaning first.
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#3
11-04-2010, 05:36 PM
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Quote:
__________________
Murray I reserve the right to hijack any thread I want to!! My carbon footprint is bigger than your carbon footprint !!!!
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#4
11-05-2010, 04:05 PM
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Thnx for all the input guys...I'm thinking, go big.
 I'll shoot for about 800 gph at 5 foot head. What pumps would you recomend?(in the $200 or less catagory) Should be getting tank back soon.And then the fun starts. 
__________________
Doug
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#5
11-05-2010, 05:51 PM
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When estimating head pressure you should multiply the vertical height by at least 1.5 to take friction and minnor losses into consideration. A factor of 2 is typically what I go with because over time the pipes become dirty and rough which adds significant friction.
So if you have 4 feet from sump level to display level you should estimate 6-8 feet of head pressure.
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