You are correct! It's especially challenging in a Lagoon style I am finding. I think my Shroom Lagoon idea doesn't mesh with some of the higher end coral I want to keep. Beginner's mistake. Going to steer towards coral that can handle higher PAR and higher flow once all the eddies are all inhabited.Flow is a really fine line to walk with shrooms. You want to try and push as far as you can to maximize turnover through the tank but keep flow directly off the cap. They can take a ton of flow around them as long as it's not disrupting them I guess with the exception of a few. I try to use a lot of deflection around my tank to achieve that.