Well, flatworm exit didn't work (as I was told by others on another thread) I saw a few in the fuge that I siphoned out. BTW, I don't think siphoning them is so easy. The airline tubing doesn't create that much suction especially since the sump is only 3 inches from the floor there's not much gravity action going on there. I also found an aptaisia in the fuge. Tomorrow I will use my acrylic sponge cleaner and try to wipe it off the surface of the fuge.
Also checked my levels 2 days after water change. Calcium =400 and kH=9.6 I want to increase the Ca but I wonder if increasing the bubble count on the reactor or increasing the flow from the calcium reactor will work best.