yeah, but it will slow with time. The filter is now running at 800l/h cos its clean, once the bristlenose poo gets into it it will slow down. Dont worry though. I recently upgraded to 700l/h internals for my breeding tanks (2fts/2.5fts) and the bristlenose love it. They come from fast woving water and enjoy the current. In fact some of the harder to breed plecos only breed with a strong current passing their cave.
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