I came up with a clever way to get a pull string into conduit so that I can pull conductors.
At first, I was adding the string as I installed the conduit, but that was a pain in the butt, constantly going from one end to the other and it would get in the way as I was trying to glue the joints. So I abandoned that plan and just installed my conduit runs without the string.
Then I took a length of string off the spool and tied a little wad of plastic from a plastic bag to one end. Then I stuck the wad in one end of the conduit and put my shop vac on the other end. 2 seconds later, I had a pull string installed!
Also, I’m really enjoying working with pvc conduit. It’s so easy to bend and shape with a heat gun. No need for expensive fittings or precise bend measurements.
When I installed our solar panels, that required metal conduit. Measuring and making compound bends with EMT in the attic and between boxes was SUCH a pain.
If you ever want to install electrical by your pond, I definitely recommend rigid pvc conduit and a heat gun.