"Bob F" wrote:

-snip-
I just leveled a concrete hot tub/spa. I jacked it up, then pumped
fairly fluid grout under it using a hand powered grout pump I bought
second hand. I connected the pump output to 3/4" pvc pipe and slipped
that under the slab, built a wall around the edge, and pumped until it
came back out, and then some.

Super! I looked at them on ebay--- think I'll call a rental place
thursday. They seem pretty dear for a simple pump. [$500 for a
5gallon- no used ones today]

Hmmm- - same brother-in-law who has the vibrator might have one in his
barn.

Good idea- thanks.
Jim