Water fall issues

[Mcaveman]

This is season 5 for pool , start of season it was fine but I have noticed that the middle waterfall started having less and less pressure . I don’t think I’m losing water . One valve directs 100% of the water to the 3 waterfalls . Any ideas ?

 

[rphpool]

I wonder if a critter or something took up residence over the winter

 

[Mcaveman]

Eventually you would think it break down though right ? Or I would get pieces of it coming out .