JohnnyAirtime
07-05-2011, 08:15 AM
Ya know, I keep hearing how users who buy the SCWD don't like the limited flow. How it causes a bottleneck and doesn't allow very good flow from a high-pressure pump (capable of higher flow rates). Well, after I did some research on SCWDs, I'm now happily using three 3/4" SCWDs on my 240gal!
First, I drilled out the inflow and outflow ports to 5/8"
... this in itself, made a huge difference!!
I then was able to repair a SCWD using knowledge I gained from another site. Cutting the top off, and removing the internal gear box. And then re-assembling it with the provided parts from HomeD.
(next time, I'll cut the lower half off - as seen in the following threads)
If you have been one to not use a SCWD due to the problems you hear about them, or the limited flow... fear no more!! Follow these links;)
(these links will provide you with ALL you need to know)
http://reefcentral.com/forums/showthread.php?t=843091
http://www.nano-reef.com/forums/index.php?showtopic=76847&st=0&p=697311&#entry697311
http://reefcentral.com/forums/showthread.php?t=845649
... I want to thank all of those who have done their homework!! It sure helped me restore faith in the SCWD!!!
PLEASE NOTE: This is for the 3/4" SCWD only. The 1" SCWD already has a removeable top and incredible flow rates. I am using 1200-1800gph pumps, and 3/4" plumbing. At one point in my 6 return lines, I had to go down in plumbing to a 1/2" adapter... the 3/4, and 1/2" plumbing, caused the 1" SCWD to NOT ALTERNATE!! You MUST plumb a 1" SCWD with 1" plumbing/fittings all the way to the tank!! Otherwise, there won't be enough out flow to spin the internal propeller. For this reason, I had to use 3/4" SCWDs on my tank as the 1" would not work correctly.
First, I drilled out the inflow and outflow ports to 5/8"
... this in itself, made a huge difference!!
I then was able to repair a SCWD using knowledge I gained from another site. Cutting the top off, and removing the internal gear box. And then re-assembling it with the provided parts from HomeD.
(next time, I'll cut the lower half off - as seen in the following threads)
If you have been one to not use a SCWD due to the problems you hear about them, or the limited flow... fear no more!! Follow these links;)
(these links will provide you with ALL you need to know)
http://reefcentral.com/forums/showthread.php?t=843091
http://www.nano-reef.com/forums/index.php?showtopic=76847&st=0&p=697311&#entry697311
http://reefcentral.com/forums/showthread.php?t=845649
... I want to thank all of those who have done their homework!! It sure helped me restore faith in the SCWD!!!
PLEASE NOTE: This is for the 3/4" SCWD only. The 1" SCWD already has a removeable top and incredible flow rates. I am using 1200-1800gph pumps, and 3/4" plumbing. At one point in my 6 return lines, I had to go down in plumbing to a 1/2" adapter... the 3/4, and 1/2" plumbing, caused the 1" SCWD to NOT ALTERNATE!! You MUST plumb a 1" SCWD with 1" plumbing/fittings all the way to the tank!! Otherwise, there won't be enough out flow to spin the internal propeller. For this reason, I had to use 3/4" SCWDs on my tank as the 1" would not work correctly.