hi e1 , first off this is an incredible site for pond info !!read almost every post !!just subscribed to the magazine i love to read and learn about ponds, im a pond fanatic i guess!! last year i built a half acre pond 15 ft deep didnt stock it yet but im incredibly anxious!!! wanted trout but after monitoring temp { summer around 78 f } its too risky for trout i thought i had more ground water but i guess its mostly runoff no problems keeping it full though, this plan interest me would half an acre pond be too small to try this??? i know my options are limited!! would appreciate any help!!