closed loop question?

[mrw1125]

Could someone please explain what this is to me i have seen people talk about it a couple of times and was wondering what is was and how it works.

 

[seaguy7]

A closed loop is a system where you simply take water directly from the main display tank and then pump it back in via jets/seaswirls/4-ways/etc. This is to increase flow in the tank without having to run all of the water through your sump or clutter your display with powerheads/tunze streams/etc. Done right, there is almost no plumbing/pumps visible in the tank.

 

[mrw1125]

i have seen some of these setups on here but have wondered how do you keep the fish/snails from being sucked in through the inlet pipe. Looks like this could happen easily and you would have a dead fish and a burnt up pump??

 

[seaguy7]

Use on of these:

or these:

 

[bassnman11]

You can also just use a piece of pvc pipe with a cap on the end and a bunch of holes drilled in it.

 

[mrw1125]

i dont know why i did not think of that but i am new to the hobby. Thanks guys.