OK, that makes sense. i will start looking for something bigger then.badreverend;3839031; said:the reason two sumps is not a good idea is if the pump in in one of the sumps go out,the water level of the main tank will drop to the level of the overflow on the disabled sump- and since both overflows need to be at the same height, I believe you would end up starving the good pump- or something like that