Need help on my filter causing stress to my fishes

[Goldfisher]

Hi guys,

I am using an Hailea filter - model & specs (please look at my signature) to aerate and filter water. My filter have 3 setup possible.

1) Vertical Spray bar - no control of water flow
2) Vertical - no control of water flow
3) Vertical with air tube - I can control the water filtration flow through a knob to allow how much air to be sucked in.

Initially I used setup no. 3 and I found out the water current is quite strong and the direct blowing of water/bubbles towards my goldie my hurt them and their fin might get thiner. If I reduce the air flow, the water filtration rate will get lower and I am worried that the tank turnover rate might not be enough for the goldie as they poop a lot.

For this reason, I changed to setup no. 1. I cannot control the current flow of my filter. After I changed to this setup, I felt there are miuch stirring and turbulence in
the water current. What should I do to help them less stress.

Today is my first day with these 3 pearl scale goldie. I don't wish for any death of my tank member

Please help.

[Shadow]

for fish only tank, you might want to reduce your filter flow to about 2 or 3 times your tank water volume but I'm not expert on fish keeping though

[wcneo]

do you have a rain bar? if have you can try puting one and face inside so the flow will be reflected to reduce the flow.