I would like to add a couple of risers to the manholes of my septic tank.
The tank is a concrete unit with 24" openings. I've been told that there are
concrete as well as plastic risers. I was wondering which is best and how
would you seal the risers to the tank? Also if anyone knows where I might
buy risers it would be appreciated.
I'm not the one looking for the riser, I already installed one. The original
concrete lid remains in place, and the riser cover has a gasketed lid.
IOW, no smell. Since one doesn't even have to remove the original concrete lid
to install the riser, there is no danger of "upsetting the chemistry of the
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