overflow/return pump ?

crex111 · Aug 2, 2007

i have a question. i just got a cs100 overflow box rated at 800gph. it will be going into a 30 gallon sump. the problem is i have a rio 1700 max output is 625gph. will i need to upgrade my pump or do u think it will be able to handle the flow? if not , are there any other remedys without having to go out and buy a new pump?
thanks

Josh · Aug 2, 2007

if your asking do you think it will handle the reduced flow then i would say yes. is 625gph after you calculated the head loss? either way, i have a cs 90 and a sedra 9000, for awhile i was using a gate valve to only let a small about of water up to the tank and even with just a trickle of water going into the tank my cs 90 worked fine. since then i closed the valve all the way and my pump is pushing the max ammount of water into the tank and it's fine.

oh and if you need a super cheap way to get the trapped air bubbles out of the top of the bend in the overflow, just start a siphon with some air hose and drain it into the sump. not the safest thing but it 'll work

crex111 · Aug 2, 2007

more specifics- reeftanksupply asked me some questions in the chatbox while i was away.
1)60 gallon tank
2)30 gallon sump
------total of 80ish gallons-------
3)cs100 overflow (800gph)
4)rio 1700 (625gph max) sitting 4ft under the overflow box in 30g sump
5)rio 1700 pumping into 1/10th chiller 2ft above sump
6)chiller another 2ft back to 60g tank

i have no clue if this is even the correct way to set this up. any help would be appreciated!

Josh · Aug 2, 2007

with a rio 1700 pumping up 4 feet you got at a max, 300gph. thats with no 90 elbows and no horizontal travel in the pipe.

crex111 · Aug 2, 2007

thanks josh,
i think your delema was the opposite of mine. your overflow has a lower gph rate than your pump. as for removing the bubbles i have a aqualifter and before that i used to stick the air tube up the siphon tube and suck the air out. hahahahaha

overflow/return pump ?

crex111

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Josh

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crex111

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Josh

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crex111

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