MarineLand 90 Overflows

Koddie Doo · 08/17/2015, 07:22 PM

What is the purpose of the vents on the middle of the overflow?(half way down) It confuses me.

Koddie Doo · 08/18/2015, 07:09 AM

Bump

Sounds Fishy · 08/18/2015, 07:24 AM

That is what I wondered too.My 220 came with an explanation with the Durso kit.Those vents help draw water from the lower half of your aquarium and into the overflow.I don't know if it really works,that way,but that is what they are for...

Koddie Doo · 08/18/2015, 07:38 AM

Quote:

Originally Posted by Sounds Fishy

That is what I wondered too.My 220 came with an explanation with the Durso kit.Those vents help draw water from the lower half of your aquarium and into the overflow.I don't know if it really works,that way,but that is what they are for...

Thanks, I agree seems a little fishy.

EricGRIT · 08/18/2015, 07:49 AM

Quote:

Originally Posted by Koddie Doo

Thanks, I agree seems a little fishy.

I have a Marineland 180 and they definitely work. Seems like a venturi effect - as the water rushes over the top of the overflow it sucks water into those lower vents and up through the overflow "column" behind the cover. I have definitely seen things get stuck up against the lower portion so it's doing a little work for sure.

drauka99 · 08/18/2015, 08:08 AM

What Eric said and I would think as a fail safe if the upper "teeth" got blocked then the lower opening would help to keep the tank from overflowing. but mainly the first

hotdogmj71 · 08/19/2015, 10:39 AM

Quote:

Originally Posted by EricGRIT

I have a Marineland 180 and they definitely work. Seems like a venturi effect - as the water rushes over the top of the overflow it sucks water into those lower vents and up through the overflow "column" behind the cover. I have definitely seen things get stuck up against the lower portion so it's doing a little work for sure.

Quote:

Originally Posted by drauka99

What Eric said and I would think as a fail safe if the upper "teeth" got blocked then the lower opening would help to keep the tank from overflowing. but mainly the first

Thanks guys. I have been wondering about it myself

08/17/2015, 07:22 PM	#1
Koddie Doo Czar of All ThingsAwesome Join Date: Aug 2006 Location: O'Fallon, IL Posts: 2,578	MarineLand 90 Overflows What is the purpose of the vents on the middle of the overflow?(half way down) It confuses me.

08/18/2015, 07:24 AM	#3
Sounds Fishy Registered Member Join Date: Jul 2015 Location: Canada Posts: 532	That is what I wondered too.My 220 came with an explanation with the Durso kit.Those vents help draw water from the lower half of your aquarium and into the overflow.I don't know if it really works,that way,but that is what they are for... __________________ Blue Spotted Ribbontail Stingray.Zebra Moray Eel.Aqueon 210 gallon,Trigger Ruby Elite 36 gallon sump

08/18/2015, 08:08 AM	#6
drauka99 Registered Member Join Date: Feb 2006 Location: at the Beach in Fl Posts: 792	What Eric said and I would think as a fail safe if the upper "teeth" got blocked then the lower opening would help to keep the tank from overflowing. but mainly the first __________________ "Aliie, Eat a Snickers, you're "HANGRY" - me "I sometimes enjoy watching shadow puppet shows" - jpfelix "Bacon is Love." - Fat Man Current Tank Info: 240 Algae Farm System Running

08/18/2015, 07:09 AM	#2
Koddie Doo Czar of All ThingsAwesome Join Date: Aug 2006 Location: O'Fallon, IL Posts: 2,578	Bump