How much flow is too much?

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huso

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When both are open he just stays at the front of the tank swimming against the pump with his top fin down, not moving anywhere. When I close the 500 he looks much more relaxed, exploring more with his fin up. Is that normal behavior?
Your fish only been in the tank one day, so its hard to say what is normal since its still getting used to your tank. But I don't want to discourage you if you feel there might be an issue, perhaps a short video will help us to confirm.
Heres the youtube video if you cant watch the in app one.
 
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He stays like that basically for hours. I pointed the pump to the rockwork and that helped before leaving the house.
 

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In the video, it does look like it is fighting the current. However, like others said, the question is; is the current too strong, or is the fish too weak? For me, the key would be; is the fish feeding well? If its eating, then the current is o.k., but if it isn't feeding, then the current is either too strong, or there is some other issue going on....
 
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In the video, it does look like it is fighting the current. However, like others said, the question is; is the current too strong, or is the fish too weak? For me, the key would be; is the fish feeding well? If its eating, then the current is o.k., but if it isn't feeding, then the current is either too strong, or there is some other issue going on....
I gave it some bloodworms and flakes. Devoured the bloodworms, spat out the flakes, probably just picky, my freshwater fish also spit new flakes out untill they get used to it.
 

Jay Hemdal

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If it ate the blood worms, that's a good sign. You may need to chop those up into smaller pieces. Also, some people are allergic to bloodworms, so take care handling them.
 
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I think im gonna keep the 500 off for a couple days unless you guys suggest otherwise. Im assuming its a bit weak because of the acclimating. I will keep you guys updated.
 

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Video is very helpful! Firefish looks to me like it’s out and happy swimming in the current, especially since you indicate it is feeding well. If you don’t have any corals you can definitely reduce the flow for a few days while the firefish acclimates. Nice looking fish.
 

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I adjusted mine until sand wouldn’t blow. New fish aren’t use to the high flow so will reduce flow temporarily and ramp back to normal over a few days. If just a fish or two added they go into acclimation box for 24-48 hours instead.
 

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