oh interesting! so when you turn off the pumps all the water in the return pipe and in the overflow comes back and floods the sump so water spills into other chambers? do you have same issue on the 45
@Keithb22 ?
yeah i really wanted the 60.3 but can't find one anywhere, but i did see that the ATO reservoir is the same size in the 60.3 and the 45.2 at ~3Gal so makes sense that its even more underwhelming for the 60.3. was never a big fan of socks either, the system is probably small enough to not use them or use some other substitute like a pad or filter floss changed weekly