Welcome to Pond Boss!!

I could be wrong, but I'm pretty sure you need a pond professional to use Rotenone. Hydrated lime you may be able to do yourself.

However, whichever course you choose, you want to make sure you get a full kill so going the professional route may have more value.

Excerpt from Robert Crais' "The Monkey's Raincoat:"
"She took another microscopic bite of her sandwich, then pushed it away. Maybe she absorbed nutrients from her surroundings."