Is higher flowrate better for HOB overflow? - Aquarium Advice

vincerules · 07-23-2008, 10:41 PM

I have a 100gl tank that I will be setting up with a sump. I am trying to decide which HOB overflow box to get. I am looking at the Eshopps PF-800, which is rated at 800gph. My questions is if would be better for me to go ahead and get the PF-1000 (rated at 900gph) or even the PF-1200 (rated at 1000gph). Would there be any advantages/disadvantages on getting the higher rated models or should I just stuck with the PF-800? Thank you.

ccCapt · 07-24-2008, 10:13 AM

Welcome to AA!

The recommended flow thru a sump is 5-10x the tank volume. Alot depends on the size of the pump AND the size of the sump. You want to aproximately match your pump rating (gph) with your overflow. A 1000gph overflow would work fine with a 900 gph pump. But, you don't want to have a 10g sump and be running 1000 gph thru it, where it would be no problem running 1000 gph thru a 55g sump.

vincerules · 07-26-2008, 01:39 PM

ok, so what if i have a 30gl sump... what would be acceptable flowrate for this size?

**Ziggy953** · 07-26-2008, 01:48 PM

For a 100g tank I would suggest going with the larger version or two of the smaller ones. I have a 120 with 2 Eshopps PF-1200 (1200gph) one on each side of the tank.

I would also recommend looking at a larger sump for your system.

**melosu58** · 07-26-2008, 03:15 PM

Everything You Always Wanted to Know About Sumps, Part I by Greg Taylor - Reefkeeping.com

Melevsreef.com - What is a Sump?

07-23-2008, 10:41 PM	#1
vincerules Aquarium Advice Newbie Join Date: Jul 2008 Location: Oxnard, CA Posts: 7	Is higher flowrate better for HOB overflow? I have a 100gl tank that I will be setting up with a sump. I am trying to decide which HOB overflow box to get. I am looking at the Eshopps PF-800, which is rated at 800gph. My questions is if would be better for me to go ahead and get the PF-1000 (rated at 900gph) or even the PF-1200 (rated at 1000gph). Would there be any advantages/disadvantages on getting the higher rated models or should I just stuck with the PF-800? Thank you.

07-24-2008, 10:13 AM	#2
ccCapt SW 10 & Over Community Mentor Join Date: Mar 2004 Location: Northeast PA Posts: 1,671 Images: 3	Welcome to AA! The recommended flow thru a sump is 5-10x the tank volume. Alot depends on the size of the pump AND the size of the sump. You want to aproximately match your pump rating (gph) with your overflow. A 1000gph overflow would work fine with a 900 gph pump. But, you don't want to have a 10g sump and be running 1000 gph thru it, where it would be no problem running 1000 gph thru a 55g sump. __________________ 125g reef See My Tank Info Check out The build project /Larry

07-26-2008, 01:39 PM	#3
vincerules Aquarium Advice Newbie Join Date: Jul 2008 Location: Oxnard, CA Posts: 7	thank you! ok, so what if i have a 30gl sump... what would be acceptable flowrate for this size?

07-26-2008, 01:48 PM	#4
Ziggy953 Aquarium Advice Addict Community Moderator Join Date: Feb 2006 Location: Sumerduck, Virginia Posts: 3,915 Images: 5	For a 100g tank I would suggest going with the larger version or two of the smaller ones. I have a 120 with 2 Eshopps PF-1200 (1200gph) one on each side of the tank. I would also recommend looking at a larger sump for your system. __________________ Happy Reefing! *120 Build in progress 6/18/08* Visit our Article section for answers on a variety of topics. LFS, PWC, PH RO/DI what in the world? Look here! Pods, algae and more!

07-26-2008, 03:15 PM	#5
melosu58 SW 10 yrs and over Community Moderator Join Date: Oct 2004 Location: Richmond Va Posts: 12,692 Images: 80	Everything You Always Wanted to Know About Sumps, Part I by Greg Taylor - Reefkeeping.com Melevsreef.com - What is a Sump? __________________ View My Tanks http://i71.photobucket.com/albums/i1...8/melosu58.jpg Click here to Visit FantasyReef

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