an appropriately sized power filter produces no more noise to your fish than you hear when you stick you head under the surface of an empty swiming pool that has its filter running.
And since most fish for sale today have either been born in, or have spent an extended period in, aquariums and holding ponds maintained by power filters, they are quite accustomed to whatever noise is being produced.
And since most fish for sale today have either been born in, or have spent an extended period in, aquariums and holding ponds maintained by power filters, they are quite accustomed to whatever noise is being produced.
