I recently purchased a reef ready 90 gallon seapora/aquarium masters. It has a durso standpipe and i am getting a ton of noise from the water flowing through the standpipe to the sump. I am running a 530-1350 gph sicce pump and have tried adjusting the flow rate to no avail. After the bulkhead i have a eshopps flex tube to the sump. I am not getting any flushing and very little gurgling. I did stick airline tubing in the vent and that only silenced the little gurgling i was getting. The main issue is the excess noise of the water rushing through the pipe. I know there are posts about quieting a durso but they all seem to be aimed towards flushing/sucking/gurgling not the extremely loud water flowing through the pipe. its loud enough where if i cant quiet it down i am going to sell it. Thank you for your help in advance