New nemos hosted my power head

[jason604]

So I got 2 new much smaller black ice clowns to my tank. Kept the old much much larger nemos in a new for a few days and I just released them. The big female nemo does show signs of aggressiveness and does charge at the new couple every so often. They now hosting my power heads at the opposite side of the tank than the old nemos which is a big nono the smaller of the two is rly small and I'm scared that it might go inside my wp25 during night mode and might get killed in the morning when it ramps up full. Just a side question are the wp25 with linked controller supposed to turned off totally at night? It switches from w1 mode to H mode speed 1. Wouldn't it still supposed to run gently?