Water Filter question

[Jeremy]

Hi Guys

At the moment I have a aqua tech filter ( I know not the best going ) the kind that hang's on the side of the aquarium. My question is I notice that where the water runs out that there is a small opening to the right of it where the water also comes out a bit? Almost like a secondary gap?? Is it normal? the filter is cleaned and the filter medium isn't blocking anything?

Thanks again for the help

[Cermet]

Is this a HOB (hang on the back) filter? If so, then is this small extra gap where the intake tube goes? (A picture is worth a thousand and one words ...)

[Jeremy]

I attached a pic, I circled it red. Its not my pic though but It shows what I mean

[mizzoutank]

That is the overflow outlet.

safety built in in case something happens causing an overflow in the back reservoir...rather it dump into the tank vs the floor. lol

It is a good visual reminder using hobs.
if you see water coming out of that, then your current filtration is too clogged/packed and needs to be rinsed out in old tank water.
a properly running hob shouldn't produce any water there.

[Jeremy]

I have it cleaned out and the filter's are not clogged. It still comes out there though a bit?

[mizzoutank]

a bit isn't a bad thing.
i'm not 100% familiar with that filter to know/see the real design of it.
I just know with my marineland HOB's. when clean they run w/o anything coming out of the overflow.

it could be the design, it could be whatever media you have isn't that "free flowing"