arindam77 wrote:Correct it, top will be more than 1.5 cm away from bottom with 2 degree pitch. Better not put any unnecessary stress on glass and joints. Not your fault, the Earth also seemed flat for centuries.
I am going to empty the tank, silicone the pipe connector on the side. Let it cure for a day or two.
Then set it up straight. and fill 2/3 rds of it.