I think they'll get used to it in a few days. I'm assuming the cascade 200 was on the 35. A little research revealed the cascade 200 pushes 185
GPH (unbelievable that they rate this filter for 55 gallons). IMO, your fsh are used to a weak current, turning over the water a little more than 5 times an hour. The AC110 will turn the water over about 7 times an hour, but running both filters does it more than 9 times an hour. That's almost twice what the fish are used to. All of the
HOB filtration on my tanks are between 8 and 10 times an hour, which is ideal IMO. They just have to build up their fishy muscles
