ok. tonight was SUPPOSED to be a good night but when the sump was full and the tank was at the right level, we started the syphon on the drains and the return pump and it ran good for about 2 min. then we heard somthing coming from the sump, when we got there, we found this.
the return pump is sucking the sump dry. its like the water isnt making it around the baffles quick enough.....we had to restrict the flow on the pump to almost nill to keep it somewhat full.... what the hell did i do wrong??? here is another shot. a little closer
PLEASE help me ASAP