On Jun 4, 3:01 pm, dean wrote:

How about a little bit of sand? Remove lid, spread a handful of sand
around the top of the rim, replace lid.

Wouldn't all the sand just fall in before you replaced the lid? (Sand
in a tank is supposed to be bad BTW - sewage truck drivers don't like
because it can't be vacuumed up)


Just enough sand to fill in the surface irregularities. As the lid is
set in place a little bit might end up falling into the tank but I
can't imagine that would hurt anything.

It would take two people to lift the lid and gently set it down rather
than sliding it in place - which would dislodge all the sand.

Just a thought.



-rev