Pond Boss Forums GENERAL QUESTIONS Muddy water dark water

Hey hi everybody,I'm new to this forum and this is my first posting. I manage a 1/8th of an acre irrigation pond at my work place, a nursery and landscape supply store. I stocked the pond with some rainbow trout in the fall of 2017 and was surprised that the trout survived the summer, some even going from 1# to almost 3# in one year. the pond had a large population of shiners and I feed the fish big strike also. the water is very dark, not muddy or creamy colored, more like a black coffee or tea color. I was considering adding 400#'s of ag lime by spreading it over the ice, currently about 6 inches thick. i haven't done a formal ph test but almost all the water in mass is acidic and just using an aquarium stip test it showed very acidic. i don't have a lot of money to spend and figured this would run me about $40. Also the pond is fed by well water and gets switched out frequently in the summer, which is why the trout have survived. does this seem like a good way to start clarifying the water. I may add an aeration system down the road. Amy thoughts?

I forgot to mention the water is very "hard" you can see orange deposits under the inlet pipe, I've been told due to iron.