Sithlord95
New member
Can I use a maxi jet for a sump if I use 1/2 inch or 3/4 inch pipe? It would be a PVC over flow. I believe the maxi jet only puts out 295 gph with 6' head.
Maxi jet 1200 for sump?
- Thread starter Sithlord95
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birdman1979
New member
The narrower the pipe the less loss due to head pressure. You would be better off with the .5" pipe.
Agu
Premium Member
The MJ 1200 is 295 gph at zero head. I've been using one for about 9 months on a 30 gallon tank with a ten gallon sump. I'd guess it's moving about 150 gph at 48" of head. With a small sump the flow is adequate but not enough to create all the circulation in the tank. Depending on tank size you'll need additional circulation.
BTW, get the Cobalt Italian made MJ , they hold up better.
BTW, get the Cobalt Italian made MJ , they hold up better.
Sithlord95
New member
Thanks all, this is a 70 gal tank with what will be a 20 gal sump
Sithlord95
New member
What is the most economical pump I could get for my setup
Sithlord95
New member
Yikes, the maxi jet cost me $20. $70-$80 for a mag 5, back to the drawing board
sleepydoc
Team RC
Actually, it's the reverse. Smaller pipe gives a greater loss of head pressure, and it increases exponentially under 1".
The losses are from gravity (total height to pump,) the resistance of the pipe (proportional to length and 1/Radius to the 4th power,) and any valves, elbows, etc in the run of pipe. All things being equal, a smaller diameter pipe will have more resistance/head loss because a greater proportion of the water flowing through it has to 'rub against' the walls of the pipe as it flows.
You can use the head loss calculator on RC's home page to get an estimate.
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