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jstorly

Too much filtration?

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I've been watching a lot of youtube videos of peoples' goldfish, and I notice a lot of them are calm and quiet, sitting on the bottom of the tank, which got me thinking...

On my 75g tank, I run a Fluval 306, Penguin 350 and two Hydro Pro IV Sponge filters run on airstones. Consequently, there is quite a lot of water movement in my tank. When I first installed the Fluval, Rose, my Oranda, used to entertain himself by swimming against the current from the output, but I don't see her doing this anymore. However, my fish in this tank are quite active during the day. Rose, my Oranda, and Maria, my red-and-white Ryukin are forever looking for food. If I even open the lid, they will be right there with their little mouths. Angeline, my Shubunkin, is forever exploring the driftwood and nibbling at the java fern. Pip, my common, is often in heat and looking to spawn. Helen, another ryukin, is the most mellow, but even she swims about quit a bit. They do begin to settle down at night when they know the light is about to go out, but I wonder, is all this water movement stressful to my fish, or are they just an active lot? I do have a 55g tank with four goldies who are much more subdued, but of course this is why I put them together in the first place. Any input? Is there a such thing as too much water movement in a goldfish tank?

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Yes, there is such a thing as too much current, but this would show itself by the fish being stressed out and exhausted looking.

From what you describe, your fish are perfectly fine with the current. If you want to add some calmer areas you can do so by placing ornaments and/or tall plants (real or silk) in a way that they break up the current at one end of the tank. This way the fish can go to that area to rest, if they need to :)

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