I3lazd wrote:maybe you dont understand my question. If you look at my system the PVC is all linked together in a closed loop system as to where yours doesn't loop around in the pvc it just dumps out of the jets and cant return to recirculate in the system, I am not referring to how we put the pump in the tank but rather the closed loop. I assume since you dont know what im talking about you probably wont have a good answer.
Then I guess there is no need to even try is there. Just for the heck of it though, why don't you research "closed loop".
Closed loop is taking the water directly out of a tank, into an external pump, directly back into the tank. There is no way to overflow with it if the power goes out since it is a "closed loop".
I've been around this hobby way too long to be smarted off by someone on the internet that doesn't even know what a closed loop is.
Maybe you could also tell fmueller that he did his wrong. http://www.fmueller.com/home/aquaristic/240g/technology/filtration/the-ugj-system/
Here is the definition from wikipedia. Another method is the closed loop in which water is pulled from the main tank into a pump which returns the water back into the aquarium via one or more returns to create water turbulence.
Here is a closed loop. http://www.melevsreef.com/closedloop.html
Here is another good link. http://www.aquaristsonline.com/blog/aqu ... that-then/
"There is one option which I believe stands out above the crowd though and that is one which is called closed loop.
Closed loop circulation is where the device which creates the waterflow is housed external to the aquarium, quite often beneath the aquarium, however it can be placed anywhere. Rigid or flexible tubing is connected to the device which connected to both the inlet and outlet of the device which both go to the aquarium.
A lot of aquarists who use closed loop circulation opt to drill the aquarium and use bulkhead connectors and taps to connect the external device to the aquarium, however you do not need to do this if you donâ€™t want to - you can go up and over the edge of the aquarium if that is easier for you.
Basically what you are doing is allowing water to be pulled from the aquarium to the external device, we will use a external water pump for this example. This pump then pushes the water along the output back into the aquarium and whilst doing this pulls more water behind it.
Now here is the good thing. In a closed loop circulation system there is no air in the pipes which means that there is no head height plus as the pump is external to the aquarium there is no heat transfer from the pump to the aquarium water.
You can setup as many closed loop as you want however each one will require itâ€™s own dedicated pump. A huge benefit of this is that with clever plumbing you can take water from the aquarium from exactly where you want it to be taken plus you can return it to an area in the tank where you want it to be returned to.
One thing I must point out though is that if you do decide to opt for a closed loop system then I would recommend that you install close off taps to both the inlet and outlet areas of the plumbing. Doing this will allow you to remove the pump it either it requires maintenance or replacement."