head pressure and gravity?

[skulls_and_sparrows]

So I am setting up a chiller that will sit below my tank, but the pump that feeds it will sit above it, so it will pump the water over the back of the tank and then down to the chiller and then back up and over into the same general area....

Will the head pressure be less, due to gravtiy helping the situation or will it be worse, because of the water having to come up back into the tank...to me it would seem to be less, because I know that when I have used hoses in the past, the water levels its self out with the other side until it reach equalibrium, with what seems like no issue at all?

can anyone speak to this?

Thanks so much...

 

[AZDesertRat]

Aquarium pumps will not suck water so you must have a siphon started to feed the pump and chiller and the pump must not outrun the siphon effect or it will starve the suction and eventually harm the pump.
Yhe headloss will be minimal since you have a suction or positive suction head on the one side offsetting the push to get the water back to the display. There will be some headloss due to the friction loss in the plumbing and the coils in the chiller but it will be equal to only 2 or 3 feet of head normally.

 

[skulls_and_sparrows]

Aquarium pumps will not suck water so you must have a siphon started to feed the pump and chiller and the pump must not outrun the siphon effect or it will starve the suction and eventually harm the pump.
Yhe headloss will be minimal since you have a suction or positive suction head on the one side offsetting the push to get the water back to the display. There will be some headloss due to the friction loss in the plumbing and the coils in the chiller but it will be equal to only 2 or 3 feet of head normally.

I don't believe it will be suction...it will be in the back of an AIO tank and it will.be in a spot that's filled with water...it will be pushing the water up and.over the back and then down into the chiller which then.will.return back.up and be the return for the tank...

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[AZDesertRat]

OK, as long as the pump has a flooded suction,stays submersed in other words, you are good. Head loss will be minimal as mentioned before.

 

[skulls_and_sparrows]

OK, as long as the pump has a flooded suction,stays submersed in other words, you are good. Head loss will be minimal as mentioned before.

OK...thx...that's what I thought...I appreciate the time and info.

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