How much is too much flow for fish?

[jdircksen]

I have a BB 75g and I'm running 29x through it right now. I'm thinking of getting a couple tunze nanos or equivalent to keep detrius from accumulating in dead spots on the bottom.

Question is - how much flow can fish handle? I don't want to stress them out by making them swim like mad 24/7.

 

[SptfireXIV]

There's no such thing. Fish deal with way more flow in the ocean than we could ever hope to achieve in a home aquarium.

Edit: Some fish, though, don't like a lot of flow. Cowfish/boxfish and lionfish come to mind.

 

[King-Kong]

<a href=showthread.php?s=&postid=9249109#post9249109 target=_blank>Originally posted</a> by SptfireXIV
There's no such thing. Fish deal with way more flow in the ocean than we could ever hope to achieve in a home aquarium.

Edit: Some fish, though, don't like a lot of flow. Cowfish/boxfish and lionfish come to mind.

No.. im pretty sure we could artificially generate TOO much flow them

I have 9500gph going through my 90g AGA standard and my fish avoid the higher flow areas and collect into the areas with more linear calmer flow and just hover, staying in the current.

 

[LobsterOfJustice]

I have 70x turnover in my 75.... everyone seems to like it.

 

[ralphie16]

in my 6' 125 gallon i have:

2 tunze 6060 streams

4 maxijet high flow mods (each greater then 2000 gph)

so my total water pumping in my tank (not including my return pump)
is over 11,000 gph which is something like 80X tank volume

my fish love it and even though i have designed a couple of quiet zones around the tank and they know exactly where they are, when they are awake they LOVE swimming with all the currents. they sleep in the quiet zones though.

its important to have the currents moving in such a way so that it somewhat resembles what it feels like when your out on the reef. I dive alot so I know how strong those currents are!

 

[dendro982]

You will see, if fish stays out of current area. Even ~2100 gph in 90g was too much for slow swimmers, like lionfish and chaetodermis.