Flow for 12G NC

cburns32 · 02-24-2006, 03:37 PM

I have a maxi jet 900 set up to return water into the tank at 230 gph, but I think my Y-connector and flare nozzles are reducing the flow greatly, I'm wondering if I should replace this setup for a hydor FLO?

Woodstock · 02-24-2006, 08:47 PM

Hummm... not sure. How much head do you have on the return? Maxijets are not made to withstand head pressure so you may want to try a different return pump.

cburns32 · 02-25-2006, 01:53 AM

1 foot 2 1/2 inches of head, I believe, maybe less...

daveat · 02-27-2006, 09:42 AM

lots less. you actually have no head because all of the flow is below water level. you don't have to pump water up if it is all below surface level

daveat · 02-27-2006, 09:42 AM

maybe a foot or less due to the 90 elbow

cburns32 · 03-03-2006, 10:58 AM

Aight well it just seems like so little, so I was wondering what may be causing that, maybe it's because I have 2 sponges in chamber 1, should I maybe take 1 out?

Woodstock · 03-03-2006, 01:28 PM

Try it; it may help but I am guessing the "Y" is reducing it a lot. If you decide to keep the sponges make sure you clean them every few days

oldsaint · 03-03-2006, 01:44 PM

Head Loss Calculator

Vertical length in feet 1.5
Horizontal length in feet
Pipe diameter in inches 0.75"
Choose your pump: Maxi jet 900
Number of 90 degree elbows 1
Number of 45 degree elbows
Number of gate valves
Number of ball valves
Number of union couplings
Number of swing check valves
Number of pipe exits 1
Number of pipe entrances 1

Total losses are 1.5 feet of head pressure, or 0.65 PSI. with a flow rate of 4 GPH. Process took 76 iterations.

You need a bigger pump. Even a 1200 will only give you 128 gph

daveat · 03-05-2006, 09:33 PM

whered the calculator come from????????????

its actually hard to calculate because although there is one foot of vertical run, it is all below surface level therefore has ambient pressure on it.

in other words--- one foot of lift underwater is not equal to one foot of lift above surface area

oh well its interesting to see all the neat calculators out there. i was close i said 1foot it said 1.5 ft

cburns32 · 03-06-2006, 12:45 AM

Confusing...But I'll look into getting a big pump, but it sure does seem like more than 4 GPH is coming out.

oldsaint · 03-06-2006, 12:59 PM

daveat, I got that form reefs.org

Quote:

Originally Posted by cburns32

Confusing...But I'll look into getting a big pump, but it sure does seem like more than 4 GPH is coming out.

It's easy to check yourself. Time how long it take to fill up a cup and multiply it by 16. There's 16 cups in a gal.
So if it takes 30 secs to fill a cup. 30x16=480sec, 480 divided by 60 or 8 mins to fill a gal, 60 mins in an hour, 60 divided by 8 = 7.5 gph
Someone please check me on that??

Woodstock · 03-06-2006, 04:42 PM

Here is the calculator:

HEAD LOSS CALCULATOR

Very cool!!

daveat · 03-06-2006, 06:20 PM

cburns - i think oldsaint meant a loss of 4 GPH

oldsaint · 03-06-2006, 10:23 PM

Quote:

Originally Posted by daveat

cburns - i think oldsaint meant a loss of 4 GPH

I could be wrong but the way I'm reading it. It's 4 gph of flow.

Quote:

with a flow rate of 4 GPH.

A MJ900 is rated at 230 gph. I not thinking there's 226 gph coming out his return.

cburns32 · 03-07-2006, 03:28 PM

Yeah, I know for sure its not 226 gph coming out nor is it 4 pgh coming out I'm guessing somewhere around 160-180, I'll try the filling up the cup thing though to.

02-24-2006, 03:37 PM	#1 (permalink)
cburns32 Bryozoan Join Date: Feb 2006 Posts: 41 View Gallery Karma Komment	Flow for 12G NC I have a maxi jet 900 set up to return water into the tank at 230 gph, but I think my Y-connector and flare nozzles are reducing the flow greatly, I'm wondering if I should replace this setup for a hydor FLO?

02-24-2006, 08:47 PM	#2 (permalink)
Woodstock The Wand Geek was here. ;) Join Date: Nov 2003 Location: North Carolina Posts: 21,658 View Gallery Karma Komment Add yours!	Re: Flow for 12G NC Hummm... not sure. How much head do you have on the return? Maxijets are not made to withstand head pressure so you may want to try a different return pump. __________________ ~Doni Marie~ *GOT ICH???* ~120 Reef Chronicle ~ *~29 gal QT/Hospital tank~* *~3 gal Pico~* "Energy and persistence conquer all things." Benjamin Franklin __________________________________________________ ______________________________________________ 120 mixed reef, dual Reeflux 10k 250 MH, dual Actinic t5s,AquaController III, ASM g3, 2x Korallia #3, Mag 9.5 return

02-25-2006, 01:53 AM	#3 (permalink)
cburns32 Bryozoan Join Date: Feb 2006 Posts: 41 View Gallery Karma Komment	Re: Flow for 12G NC 1 foot 2 1/2 inches of head, I believe, maybe less...

02-27-2006, 09:42 AM	#4 (permalink)
daveat Sea Pen Join Date: Jan 2006 Posts: 322 View Gallery Karma Komment	Re: Flow for 12G NC lots less. you actually have no head because all of the flow is below water level. you don't have to pump water up if it is all below surface level

02-27-2006, 09:42 AM	#5 (permalink)
daveat Sea Pen Join Date: Jan 2006 Posts: 322 View Gallery Karma Komment	Re: Flow for 12G NC maybe a foot or less due to the 90 elbow

03-03-2006, 10:58 AM	#6 (permalink)
cburns32 Bryozoan Join Date: Feb 2006 Posts: 41 View Gallery Karma Komment	Re: Flow for 12G NC Aight well it just seems like so little, so I was wondering what may be causing that, maybe it's because I have 2 sponges in chamber 1, should I maybe take 1 out?

03-03-2006, 01:28 PM	#7 (permalink)
Woodstock The Wand Geek was here. ;) Join Date: Nov 2003 Location: North Carolina Posts: 21,658 View Gallery Karma Komment Add yours!	Re: Flow for 12G NC Try it; it may help but I am guessing the "Y" is reducing it a lot. If you decide to keep the sponges make sure you clean them every few days __________________ ~Doni Marie~ *GOT ICH???* ~120 Reef Chronicle ~ *~29 gal QT/Hospital tank~* *~3 gal Pico~* "Energy and persistence conquer all things." Benjamin Franklin __________________________________________________ ______________________________________________ 120 mixed reef, dual Reeflux 10k 250 MH, dual Actinic t5s,AquaController III, ASM g3, 2x Korallia #3, Mag 9.5 return

03-03-2006, 01:44 PM	#8 (permalink)
oldsaint Ricordea Join Date: Dec 2004 Location: Tampa,Fl Posts: 194 View Gallery Karma Komment	Re: Flow for 12G NC Head Loss Calculator Vertical length in feet 1.5 Horizontal length in feet Pipe diameter in inches 0.75" Choose your pump: Maxi jet 900 Number of 90 degree elbows 1 Number of 45 degree elbows Number of gate valves Number of ball valves Number of union couplings Number of swing check valves Number of pipe exits 1 Number of pipe entrances 1 Total losses are 1.5 feet of head pressure, or 0.65 PSI. with a flow rate of 4 GPH. Process took 76 iterations. You need a bigger pump. Even a 1200 will only give you 128 gph __________________ 180 FOWLR, 260 Mixed Reef, 55 & 29 QT. Always looking for volunteers on water change day Wisdom and knowledge is your's to fish

03-05-2006, 09:33 PM	#9 (permalink)
daveat Sea Pen Join Date: Jan 2006 Posts: 322 View Gallery Karma Komment	Re: Flow for 12G NC whered the calculator come from???????????? its actually hard to calculate because although there is one foot of vertical run, it is all below surface level therefore has ambient pressure on it. in other words--- one foot of lift underwater is not equal to one foot of lift above surface area oh well its interesting to see all the neat calculators out there. i was close i said 1foot it said 1.5 ft

03-06-2006, 12:45 AM	#10 (permalink)
cburns32 Bryozoan Join Date: Feb 2006 Posts: 41 View Gallery Karma Komment	Re: Flow for 12G NC Confusing...But I'll look into getting a big pump, but it sure does seem like more than 4 GPH is coming out.

03-06-2006, 04:42 PM	#12 (permalink)
Woodstock The Wand Geek was here. ;) Join Date: Nov 2003 Location: North Carolina Posts: 21,658 View Gallery Karma Komment Add yours!	Re: Flow for 12G NC Here is the calculator: HEAD LOSS CALCULATOR Very cool!! __________________ ~Doni Marie~ *GOT ICH???* ~120 Reef Chronicle ~ *~29 gal QT/Hospital tank~* *~3 gal Pico~* "Energy and persistence conquer all things." Benjamin Franklin __________________________________________________ ______________________________________________ 120 mixed reef, dual Reeflux 10k 250 MH, dual Actinic t5s,AquaController III, ASM g3, 2x Korallia #3, Mag 9.5 return

03-06-2006, 06:20 PM	#13 (permalink)
daveat Sea Pen Join Date: Jan 2006 Posts: 322 View Gallery Karma Komment	Re: Flow for 12G NC cburns - i think oldsaint meant a loss of 4 GPH

03-07-2006, 03:28 PM	#15 (permalink)
cburns32 Bryozoan Join Date: Feb 2006 Posts: 41 View Gallery Karma Komment	Re: Flow for 12G NC Yeah, I know for sure its not 226 gph coming out nor is it 4 pgh coming out I'm guessing somewhere around 160-180, I'll try the filling up the cup thing though to.

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