i think i have a small problem on my 960 gallon

  • We are currently upgrading MFK. thanks! -neo
well that works for now, i added it to it, minimal to no effect on the pump or output, and i can put my hand around it with no suction feeling at all,

now to find a nice permanent fix
 
I was think if you extend out PVC pipe with a cap with slots or lots of holes it increases the area in which all the water is coming from and would minimize the suction. Something like this(excuse the horrible paint skills)

filter2.JPG
 
we should all make a ms paint art gallery, we are so good :D
 
take the pump off the pipe and let the pipe dump into an overflow - than let the pump suck from the overflow. I have always done that. As the water is pumped back into the tank it will go into the overflow. I have used pond pumps at the bottom of overflow boxes for years. The pond pump puts water back in. I like the pump in the water as that keeps it cool.
 
A little lesson in physics,
Its all about the suction, suction, suction not the flow! Technically there is no such things as suction just a greater pressure on one side than the other. High pressure areas want to move to low pressure areas. The problem is that in a pipe you only have one intake and a constant pressure less than the ambient. If that one intake is covered the pressure inside the pipe will be much less because of the pump. This causes whatever it is stopping the flow to stick. So the solution is to have multiple inlets of water. That way it always has somewhere else to take the flow from so the pressure the pump is exerting (which is constant) is essentially divided by the holes. That way it is the same amount of flow but much much less pressure. You will not have the problem of a fish getting stuck if the pressure(force) is not great enough to keep it there.
That is why I proposed the extended pipe with hundreds of inlet holes that way the pressure is very minimal but the flow (gph) would still be the same so you would never have the problem of a fish getting stuck. Not only that but the holes keep larger living things out of the filtration.


Hope this helps
 
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