Too much current?

**elfritobandito9** · 06-04-2008, 07:22 PM

So I have a bio-wheel filter on both my 10 gal and 20 gal. I'm not at home now, but I believe that 10 gal has one that is rated for 30 gal and the 20 gal has one rated for 50. I could be wrong but it is a fair amount more. I know there is nothing wrong with a lot of filtration but I am wondering if there is a problem with too much current? Unfortunatly neither filter has an option to slow the speed. I could put in more filtration media if I need too. That could slow things down. let me know what you think!

**Dave66** · 06-04-2008, 07:28 PM

As long as the fish can swim easily about, it isn't too much filtration. And filter ratings should be taken with a grain of salt. The manufacturers test the filters without media within and only in laboratory conditions. So you can halve what they are rated for. So your 10 actually has a filter rated for a 15, your 20 one for up to a 25.
You do need a bit of current from your filters to adequately filter the whole of your tanks.

Dave

**elfritobandito9** · 06-04-2008, 07:31 PM

Thanks.
It just worried me because the current is quite a bit more than it used to be before I switched filters. There are practically rapids where the water comes into the tank!

**Dave66** · 06-04-2008, 10:39 PM

My tanks are a good deal larger that yours and my filters turn over the water in my freshwater tanks between five and eight times an hour, depending on the power and number of filters on those tanks. To say that the outflows from those filters would be rapids would be an understatement :). Think fire hose.

Dave