They may not have taken just because they didn't want to.
It may not have been the watering or lack of.
I had plenty (on what blooms I did have) that did not take. On my TET spiders/UFs I only got 5 pods from around 30 plants with hundreds of blooms. I have some that set pods on every bloom last year but NOT this year. I actually had quite a few pods but most of them aborted for some reason this year. I don't know if it was the pollen I used ( I was using several Tet conversions) or just the freaky season. I do know that I usually lose most of my first scape pods and I have to rely on rebloom scapes. One hybridizer had said that he has seen this and it's because the plant is putting its energy into sending up rebloom scapes and not the pods so they abort.
I can have 2 clumps of the same plant, one will set every bloom and the other won't set a thing. The plants have a mind of their own and don't care what we want