I have a fluval flex 32.5 gallon with 2 mp10s. Everything else is stock. All of my levels are good, yet my Duncans and hammer are not opening. The duncan very little and the hammer is constricted still. I added them yesterday. When I got home from work the duncan was closed up tight so I moved him. Are the 2 mp10s to much flow? I have them on low and lagoon...