I don't think I expressed that correctly. They will need flow, but they do not flop over when the pump is turned off, for example. If it's only been in there a couple of hours, don't start messing with it yet. This is so very common for a leather, especially a toadstool, to do.
Thanks everybody for your input, it's getting some flow in that corner as I have the wave maker pointing in that direction. Il just give it time seems to be the general idea?