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viggen · 07/20/2010, 05:05 PM

So he reduced a single 1.5in line to a single 3/4 in line??? There is a head loss calc on this site, you can use it to get a idea of the flow.

You actually do not want a lot of flow through your sump so even though he did screw up the install, it's actually not all bad!!! The Dart's are suppose to work fine (doesn't hurt the pump) with high head pressure & they will also use less energy vs running at 4ft head. What is in your sump? You do not want a lot of flow through there.... 2-4x's a hour is all that is needed. So a 120g tank 250-500gph is really all that's needed.

If you are stuck on wanting lots of flow you need a pump that can push high flow through that pupe. Iwaki 55 or 100 rlt would do the trick but they are LOUD & also suck a LOT of power. There is also the UNO line from Reeflo that uses a 1.5in intake & a .75 in return. They will consume 3x's the power of your Dart & flow a few times more water as well but to much flow is bad in the sump!!!!

07/20/2010, 05:05 PM	#2
viggen Registered Member Join Date: Sep 2004 Location: Dayton, Ohio Posts: 2,213	So he reduced a single 1.5in line to a single 3/4 in line??? There is a head loss calc on this site, you can use it to get a idea of the flow. You actually do not want a lot of flow through your sump so even though he did screw up the install, it's actually not all bad!!! The Dart's are suppose to work fine (doesn't hurt the pump) with high head pressure & they will also use less energy vs running at 4ft head. What is in your sump? You do not want a lot of flow through there.... 2-4x's a hour is all that is needed. So a 120g tank 250-500gph is really all that's needed. If you are stuck on wanting lots of flow you need a pump that can push high flow through that pupe. Iwaki 55 or 100 rlt would do the trick but they are LOUD & also suck a LOT of power. There is also the UNO line from Reeflo that uses a 1.5in intake & a .75 in return. They will consume 3x's the power of your Dart & flow a few times more water as well but to much flow is bad in the sump!!!!