Overflow

maroun.c · 04/26/2006, 12:25 PM

Hi,
I'm making a custom made 100 G tank
I will have sump below the tank in the stand which will contain the skimmer, and refugium in addition to the returm pump section. My return pump will be an ocean runner giving 2500 litres per hour (will get reduced due to height and tubing elbows...)
water will flow to the tank in a 3/4" tube. do you think a 1" tube would be enough for water flowing back or should I add a 3/4 " backup to it?
also what size of overflow box would you suggest?
Do you think a 10'x10' built in overflow will fit the tube taking water out and in the tank with the durso for the 1" tubing?
if I am to add a 3rd pipe to it how large do you think i should make it?
also what water level inside the overflow do you think i should keep?
is there any effect to water level on the noise level?
any pics will be greatly appreciated too

Fat Man · 04/26/2006, 12:32 PM

You might try this calaulator . It's found on the left side of the Reef Central home page, along with other calculators.

maroun.c · 04/27/2006, 02:02 AM

Thanks,
Never noticed those.

sttroyiii · 04/27/2006, 08:35 AM

I think you are going to be recommended to really upgrade your pipe size. Just for comparison, I have a 37g with 10g sump, and I am using a 3/4" return that Y's and a 1" drain. The drain isnt really keeping up too well. Im running a mag7 which is a little overkill. I think it might be a good idea to double the return size for a drain. So if you have 1" returns, maybe go with 2" worth of drains. Maybe some more people will 'pipe' up...lol, sorry. I just hate having my drain hold me back on return water. Im about to bump it up to 1.25-1.5".

Salty Brother · 04/27/2006, 09:50 AM

Go with 1in tubing, it is a lot nicer, I have a 29 with 15 sump, and I have 1in pvc and mag 7 through SCWD.
If you want to try a SCWD i have a lot of good mods to make them a lot better and i could pm you if you want me to.
Good luck

maroun.c · 04/27/2006, 12:12 PM

Thanks for all the replies and sorry for the basic question:
What is SCWD? any info you could send me would be greatly appreciated.

dnjan · 04/27/2006, 07:53 PM

I have two 1-1/4" overflows on my 100-gal, and they run close to full capacity. Return is a SEN900 through a 3/4" line and a seaswirl.

Salty Brother · 04/27/2006, 09:15 PM

A SCWD is a "switching current water directer". It is a kind of wavemaker, with my mods you wouldny have to use flexible tubing, you can use threaded pvc, and I also made the holes bigger for more flow.SCWD
Mine works great now, and makes decient waves.

04/26/2006, 12:25 PM	#1
maroun.c Registered Member Join Date: Apr 2001 Location: Lebanon Posts: 6,111	Overflow Hi, I'm making a custom made 100 G tank I will have sump below the tank in the stand which will contain the skimmer, and refugium in addition to the returm pump section. My return pump will be an ocean runner giving 2500 litres per hour (will get reduced due to height and tubing elbows...) water will flow to the tank in a 3/4" tube. do you think a 1" tube would be enough for water flowing back or should I add a 3/4 " backup to it? also what size of overflow box would you suggest? Do you think a 10'x10' built in overflow will fit the tube taking water out and in the tank with the durso for the 1" tubing? if I am to add a 3rd pipe to it how large do you think i should make it? also what water level inside the overflow do you think i should keep? is there any effect to water level on the noise level? any pics will be greatly appreciated too

04/26/2006, 12:32 PM	#2
Fat Man Registered Member Join Date: Jul 2002 Location: Way out yonder where the west commences Posts: 561	You might try this calaulator . It's found on the left side of the Reef Central home page, along with other calculators. __________________ peace Stay ignorant. Kafudafish PhD 2012 Every time you squirt some of that delicious sauce on your food, just remember, that's pure California baby. Mikey da Banker 2013 Current Tank Info: Dusty

04/27/2006, 02:02 AM	#3
maroun.c Registered Member Join Date: Apr 2001 Location: Lebanon Posts: 6,111	Thanks, Never noticed those. __________________ 390 G mixed reef build Current Tank Info: 390G mixed reef

04/27/2006, 12:12 PM	#6
maroun.c Registered Member Join Date: Apr 2001 Location: Lebanon Posts: 6,111	Thanks for all the replies and sorry for the basic question: What is SCWD? any info you could send me would be greatly appreciated. __________________ 390 G mixed reef build Current Tank Info: 390G mixed reef

04/27/2006, 07:53 PM	#7
dnjan Premium Member Join Date: Jun 2000 Location: Seattle, WA, USA Posts: 1,707	I have two 1-1/4" overflows on my 100-gal, and they run close to full capacity. Return is a SEN900 through a 3/4" line and a seaswirl. __________________ Don

04/27/2006, 08:35 AM	#4
sttroyiii Premium Member Join Date: Jan 2006 Posts: 378	I think you are going to be recommended to really upgrade your pipe size. Just for comparison, I have a 37g with 10g sump, and I am using a 3/4" return that Y's and a 1" drain. The drain isnt really keeping up too well. Im running a mag7 which is a little overkill. I think it might be a good idea to double the return size for a drain. So if you have 1" returns, maybe go with 2" worth of drains. Maybe some more people will 'pipe' up...lol, sorry. I just hate having my drain hold me back on return water. Im about to bump it up to 1.25-1.5".

04/27/2006, 09:50 AM	#5
Salty Brother Registered Member Join Date: Jul 2005 Location: Madison, WI Posts: 1,119	Go with 1in tubing, it is a lot nicer, I have a 29 with 15 sump, and I have 1in pvc and mag 7 through SCWD. If you want to try a SCWD i have a lot of good mods to make them a lot better and i could pm you if you want me to. Good luck

04/27/2006, 09:15 PM	#8
Salty Brother Registered Member Join Date: Jul 2005 Location: Madison, WI Posts: 1,119	A SCWD is a "switching current water directer". It is a kind of wavemaker, with my mods you wouldny have to use flexible tubing, you can use threaded pvc, and I also made the holes bigger for more flow.SCWD Mine works great now, and makes decient waves.