Drill holes in Sea Swirls?

DownwardDawg · 07/28/2012, 06:57 PM

Do I need to drill holes in my Sea Swirls for anti-siphon? If so, where do I drill them?

mfinn · 07/28/2012, 07:55 PM

My sea-swirls only go into the water a couple inches.
How deep is yours?

Misled · 07/28/2012, 08:23 PM

There is a hole in the crotch of the elbow on mine. But mfinn says, it isn't that far in the water. Mine's about an inch below the water line.

DownwardDawg · 07/29/2012, 05:16 AM

Quote:

Originally Posted by mfinn

My sea-swirls only go into the water a couple inches.
How deep is yours?

I haven't filled the tank yet. I will be doing that next week hopefully. I'll take a good look at it. It may sit just below the water line. If it's just below the water, 1-2 inches, how much volume would that be in a 125? I have 4 sea-swirls by the way.

mfinn · 07/29/2012, 09:26 AM

The thing you have to be careful of when you plan for power outages and water returning to the sump, is leaving enough room in the sump for water that will syphon back to the sump.
I measure the depth of the return nozzle on the lowest ( in the tank) in inches and mulitply it by the width and length of the tank and then divide by 231. That will give you the gallons that will travel back to the sump when the pumps are turned off or a power outage.
So 2" x 72" x 18" = 2592 then divide by 231 = 11.2 gallons of water.

mfinn · 07/29/2012, 09:31 AM

I measure to the absolute lowest point of the return, just to be safe. Somewhere nearer to the middle of the lowest return may be more realistic.
I also do make freshwater tests to get a better idea of what will actually happen.

DownwardDawg · 07/29/2012, 09:45 AM

Quote:

Originally Posted by mfinn

The thing you have to be careful of when you plan for power outages and water returning to the sump, is leaving enough room in the sump for water that will syphon back to the sump.
I measure the depth of the return nozzle on the lowest ( in the tank) in inches and mulitply it by the width and length of the tank and then divide by 231. That will give you the gallons that will travel back to the sump when the pumps are turned off or a power outage.
So 2" x 72" x 18" = 2592 then divide by 231 = 11.2 gallons of water.

Wow! 11.2 gallons would be a bunch of extra water. Thanks for the input. I'll measure the distance and do the calculations!

07/28/2012, 06:57 PM	#1
DownwardDawg Registered Member Join Date: Aug 2010 Posts: 838	Drill holes in Sea Swirls? Do I need to drill holes in my Sea Swirls for anti-siphon? If so, where do I drill them? __________________ Current Tank: 125 gal mixed reef, 3-250 watt Radiums, T5 actinics, CS2 skimmer, RKL 60 gal "fun tank", 2-Ecotech Radions, Lifereef Overflow, build-in-progress

07/28/2012, 07:55 PM	#2
mfinn Registered Member Join Date: Apr 2002 Location: Olympia. WA. Posts: 8,648	My sea-swirls only go into the water a couple inches. How deep is yours? __________________ 240 gallon soft coral tank 50 gallon lps tank

07/28/2012, 08:23 PM	#3
Misled RC Mod Join Date: Oct 2006 Location: Pittsburgh, Pa Posts: 11,440 Blog Entries: 11	There is a hole in the crotch of the elbow on mine. But mfinn says, it isn't that far in the water. Mine's about an inch below the water line. __________________ Jesse I'm not saying I'm Batman. I'm just saying nobody has ever seen me and Batman in a room together.

07/29/2012, 09:26 AM	#5
mfinn Registered Member Join Date: Apr 2002 Location: Olympia. WA. Posts: 8,648	The thing you have to be careful of when you plan for power outages and water returning to the sump, is leaving enough room in the sump for water that will syphon back to the sump. I measure the depth of the return nozzle on the lowest ( in the tank) in inches and mulitply it by the width and length of the tank and then divide by 231. That will give you the gallons that will travel back to the sump when the pumps are turned off or a power outage. So 2" x 72" x 18" = 2592 then divide by 231 = 11.2 gallons of water. __________________ 240 gallon soft coral tank 50 gallon lps tank

07/29/2012, 09:31 AM	#6
mfinn Registered Member Join Date: Apr 2002 Location: Olympia. WA. Posts: 8,648	I measure to the absolute lowest point of the return, just to be safe. Somewhere nearer to the middle of the lowest return may be more realistic. I also do make freshwater tests to get a better idea of what will actually happen. __________________ 240 gallon soft coral tank 50 gallon lps tank