From what I'm reading on this forum it seems as if everyone eventually ends up using alum/lime to clear up suspended clay water... a couple questions:

- our pond overflows into our neighbors and they swim in it at times... what are the effects short/long term of alum/lime on the water relative to swimming in it?

- where are typical places to buy these two products? i've read other threads and it seems farm coop/feed stores, but wondering in general what the options are

- for my pond (~0.8 acre-ft) looking like I need about 100 lb alum, 50 lb lime?