Angelfish (Playing) With Powerhead?

[ntrueman]

Hello all!

I'm in a bit of a pickle so any help would be great!

I recently migrated all my tropics into a new tank, everything is going great so far and they really do seem to be very very happy! My problem is at the beginning of the week (Monday) I brought two Zebra Angelfish and they were in my quarantine tank until about 3 hours ago. I moved them over into the main tank this evening, in the smaller 45 Litre tank they were fine but in the larger tank they seem to be doing something rather strange! At first they seemed quite content getting to know the surroundings and other inhabitants etc, but over the past hour they have started to worry me!

I have a 3000 L/H Powerhead in the tank to ensure a constant flow around the aquarium, all the other fish swim into the main current and enjoy swimming directly at it with the flow towards them! They then move into the calmer water when they become bored or tired I assume? The Angelfish are the same however after a minute or so rather than swimming out of the current they allow it to push them with quite some force to the other side of the tank and hit the glass! The strange thing is they keep doing the same thing?

I have turnt the powerhead off for now and they are acting completely normal, any help or advice would be great!

I did a water test on the main tank yesterday before my weekly 15% change.


Tank - 155 Litres
Ammonia - 0
Nitrite - 0
Nitrate - 18
PH - 7.6
Temp - 27

Other Tankmates:
4 x Marble Sailfin Molly
5 x Zebra Danio
2 x Black Swordtail
1 x Clown Loach
2 x Harlequin Rasbora

 

[spectrum]

Angelfish are very slow moving and not suited to fast currents, if they get hit sideways on by a water current then they are pretty helpless, if they keep hitting the glass then you will definitely need to do something, can you turn the powerhead down, or angle it more at the side so its not a jet of water going right into the middle of the tank?

 

[ntrueman]

Angelfish are very slow moving and not suited to fast currents, if they get hit sideways on by a water current then they are pretty helpless, if they keep hitting the glass then you will definitely need to do something, can you turn the powerhead down, or angle it more at the side so its not a jet of water going right into the middle of the tank?

Thanks for the advice! I have moved the powerhead flow more towards the top of the tank now and they seem alot calmer!