Shelley

Hi I’m Shelley I live in Roswell NM. I started out with a betta fish now I have 3 and starting a new tank. I have a problem with water flow I have 2 Mari land glass led and a fluval spec the flow from the filter is way to fast it’s becoming an issue I need some ideas on how to fix the problem I’m afraid I’m no very inventive so any suggestions would be very welcome. Take into consideration I’m 70 years old so instructions need to be detailed. I hope I’m in the right place for this