I have a Euro Reef Skimmer. I was running a Rio 2100 pump on it that I attached a venturi nozzle to. It worked very well. But the Rio failed and I purchased a Jabeo DCT 4000 and was sure all I had to do was attach the venturi nozzle and it would work just fine. I glued the nozzle to a threaded fitting and screwed it in. But the bubbles are not micro. They are large and the skimmer quickly overflows even with the pump on low. I'd glue it right on the pump but if it still doesn't work then its stuck to the pump. Skimmer is a good skimmer. Can't find a venturi nozzle for Jabeo. Any ideas as to what I could try?