I think you still may not understand me. My question doesn't have anything to do with the plants! 
I just want to know how people change their EZ clone sprayers in the NFT unit if both ends are sealed by fence post caps. And thanks for the link, I am going to ask there as well.

I just want to know how people change their EZ clone sprayers in the NFT unit if both ends are sealed by fence post caps. And thanks for the link, I am going to ask there as well.