Is my filter too strong

[vijayw]

Tank: 30 gn molded glass rectangular (31wx18hx13d inches)
Tank mates: 6 Tiger barbs, 4 Tinfoil, 4 Koi, 1 AngelFish, 1 Suckerfish
Filter: Top filter, 2300 Lt/Hr,
Filter media: Black dense foam at bottom, Black coarse form and on top white wooltype (that came along with tank)
Lights: multicoloured LED lights
Decoration: multicoloured Gavel, artificial plant (one big) and couple small, 3 Big staked stones
Heater: Yes

I run the filter 24x7, except when I feed them - mostly twice a day.
All fish become super active and finish the food within 2-3 minutes.

My worry is they dont make use of full tank, most of the time all of them swim at bottom only. Except Angel fish, usually it stays at surface in a corner, around the filter motor. But she goes everywhere.

When I keep the filter off, I notice they travel everywhere, and as soon as I turn filter ON, they all soon reach to the bottom. Is my filter scaring them?

Most of the time I find all of them facing towards the left side of tank, the opposite side where the filter inlet is placed.

Also - whenever I change the light, they all kind-of startled.

Am I doing something wrong?

 

[fishwonder]

You should add aeration. Lots and lots of small micro bubbles to help with oxygen.

Aeration and a little more turbulent water flow is needed.

 

[vijayw]

You should add aeration. Lots and lots of small micro bubbles to help with oxygen.

Aeration and a little more turbulent water flow is needed.

Thanks,

The filter body exerts the millions of micro air bubbles. If you notice closely you'll see that in the pic.


Moreover, I forget to add in my post, my tank do have an air pump, and a bubble strip, which i run occasionally.

 

[charliebankston]

Yeah, and does that outlet have a directional plate? Some of mine had trouble staying on so I used e6000 glue or silicone and they stay. You could direct the nozzle more toward the surface

 

[vijayw]

Yeah, and does that outlet have a directional plate? Some of mine had trouble staying on so I used e6000 glue or silicone and they stay. You could direct the nozzle more toward the surface

Interesting, nope the outlet doesn't have any direction plate as such.

But I was in an impression that the this outlet is intend cycle the water towards the filter inlet.

If I (somehow) direct the nozzle towards the surface, hope it wont affect the filtering?

 

[charliebankston]

It's def better if you have a washing machine pattern in the tank for cleaning. Maybe I'm not seeing your pic clearly. Oldy eyes here, lol.

 

[vijayw]

Another thought, are my fishes *too small* for this tank / setup ??

 

[charliebankston]

Another thought, are my fishes *too small* for this tank / setup ??

No, I don't think so. Most of those get to be pretty powerful sizeable fish