Why does the skimmer water level change when the sump water level changes

OARrocks · 01/03/2009, 07:39 PM

For hang on skimmers. I cant for the life of me understand the physics of this. So basically the water level over the pump is changing and it is affecting the skimmer water level. The pump is going at a steady rate regardless of the water level, does it have to do with pressure?

nemofish2217 · 01/03/2009, 08:15 PM

I'm not sure but it might have to do with the changing pressure on the actual skimmer cylinder? Maybe you have different pressures on the water inside when the sump level differs? Like I said, I'm not sure either just throwing it out there...

45commando · 01/03/2009, 09:04 PM

Hi,
I think it is all to do with the head pressure on the pump.If the sump water level is "high" in relation to the skimmer,then there is less head pressure than when the sump level drops.When the sump level is low,there is more head pressure & the pump has to work harder.HTH

01/03/2009, 07:39 PM	#1
OARrocks Registered Member Join Date: Oct 2006 Location: Florida Posts: 393	Why does the skimmer water level change when the sump water level changes For hang on skimmers. I cant for the life of me understand the physics of this. So basically the water level over the pump is changing and it is affecting the skimmer water level. The pump is going at a steady rate regardless of the water level, does it have to do with pressure? __________________ You reap what you sow Current Tank Info: About 30

01/03/2009, 09:04 PM	#3
45commando Registered Member Join Date: Aug 2004 Location: Florida Posts: 1,321	Hi, I think it is all to do with the head pressure on the pump.If the sump water level is "high" in relation to the skimmer,then there is less head pressure than when the sump level drops.When the sump level is low,there is more head pressure & the pump has to work harder.HTH __________________ "It's not the size of the dog in the fight;It's the size of the fight in the dog!" -Sir Winston Churchill. Current Tank Info: 92G Corner tank, 250 wt 14K MH, 20G sump, 5G fuge, mixed reef

01/03/2009, 08:15 PM	#2
nemofish2217 Registered Member Join Date: May 2004 Location: South Carolina Posts: 1,606	I'm not sure but it might have to do with the changing pressure on the actual skimmer cylinder? Maybe you have different pressures on the water inside when the sump level differs? Like I said, I'm not sure either just throwing it out there...