Newbie with MAJOR problem...

[MyBlueDog]

I tried injecting some acid onto it and letting it sit, and that definitely helped. But I'm reluctant to put a whole bunch of acid in there for obvious reasons, including fitting that contain PVC glue.

I think I know the answer, but anyone know if the big acid injection is doable?

[beary]

What about changing the plumbing temperarily and reverse the flow to push it out?

[MyBlueDog]

Thanks. Tried that already. No luck. It's almost as if the concrete got inside of the pipe and it dried in there.

Plus, 20 years of crap flowing through the main drain on the suction side, means every other spec of sand, rock, etc pool probably got captured by the clog and the whole thing calcified.

I wish I could snap a picture of this thing, cuz it's really an eye sore.