Internals Vs Externals (Pumps)

[Peter C]

Obviously internals I know about as I have one already

But are externals the ones that have those pipes in the tank, a bit similar to the heaters in thickness with a cone over the end. See them quite a bit in pet stores

If not, how do the internals get the water from the tank to filter?

Iv read about the bars at the top of tanks that put the filtered water back into the tank, just don't know much about how the dirty water gets into the external filter

Cheers

 

[big_sw2000]

Obviously internals I know about as I have one already

But are externals the ones that have those pipes in the tank, a bit similar to the heaters in thickness with a cone over the end. See them quite a bit in pet stores

If not, how do the internals get the water from the tank to filter?

Iv read about the bars at the top of tanks that put the filtered water back into the tank, just don't know much about how the dirty water gets into the external filter

Cheers

Yep that about soms it up. Pipe from tank to syphone water to filter, then return pipe to pump water back. Up tp you if you use a spray bar, or other outlet in tank.

Steve

 

[OldMan47]

Water flow from a tank to an external filter is easy enough to understand PeterC. The inlet pipe is a siphon so it is much like you do when using a siphon for a water change. By having a pump in the filter and a return pipe, the "bucket" that the filter acts like, never feels full to the siphon and flow just continues. Every time the pump moves an ounce or two of water, the same amount returns to the filter by the siphon action and the filter stays full.