So last week I noticed that the water level in my DT was high first thought was air in my U tube. That was not the case what I found was bubble algae in the U tube restricting flow. Cleaned that out now I wake up this morning with the DT about to overflow. I am th.king there is bubble algae in the plumbing down to the sump. Turned off the return pump and came to work. What does anyone sugest to clear out the plumbing?