Noisy Mega Flow Overflow

I just finished setting up my 120. I fired up the pumps to do a freshwater test foe leaks and could not believe what I heard. I have the dreaded "toilet flush" sound. I have the mega flow drain kit installed, the only thing I can think of is the fact that I did not use the supplied bulkheads in the kit. I had clearance issues, so I had to use shorter bulkheads and put a 90 on the end to attach the drain hose. Any help would be greatly appeciated.

 

It is a constant flushing. I used flex.

 

If you put a 90 on the end it will never work right. You have to have a street L hooked into a T then a cap on top with a hole in it for air.

R. Durso's 180g - Durso Standpipe for AGA Small Overflows

 

With all due respect Otty, the 90 I am talking about is on the under side of the overflow where the drain line conects and then goes to the t that conects the two drains to the wet dry.

 

I had a problim like that and adjusted my flex hose & that fixed it.

 

I will try to get pics tonight and get them posted tommorow since it is getting late. 4:30 am is going to come rather fast.

 

If you ever need some help im right around the corner. I am a plumber. =)

 

The first photo shows the right side drain. The second photo shows the T where the right and left drains connect at the wet dry. The third shows the left side drain .