HI I have my betta in a Aqueon MinI Bow 2.5. The filter's current is too strong for my baby boy betta. I have to unplug the filter to feed him because he struggles to get his food if I keep it on. I went to petco to ask if there was anything I could purchase to slow down the current. They told me no and told me to take out the filter, that bettas do not like filtered water. I am pretty sure every fish needs a filter or at least in their best interest. What can I do to slow down the current? Also is this true what petco says?