Michael, What filter model do you have.
I have an external fluval that has a lever on it to adjust the water flow.
I have it set so the current isn't so strong in my 46G bowfront so the food will
land in the feeding dish I have on top of the gravel.
and allow the fish to rest at night.





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He just has the round edged PVC pipes and the rock things are fairly smooth too, so I think he'll be ok.
