Man, I sure don't know. But I think the fancy term you're looking for might be "hypolimnetic aeration." I've seen it discussed here before in the context of summer aeration to preserve stratification as a cold refuge for trout. I'm not aware of a consumer-grade application of it, either.

http://forums.pondboss.com/ubbthreads.php?ubb=showflat&Number=508429

Here is a more recent discussion.

Our old pond project (updated 4/11/17)
+Donate ('17)