Hi
     I am new here, just wanted to ask with regards poly tunnel, Lets say i go down the route of getting permitted development for poly tunnel if i have 15 acres of land. Its for plants etc. 
poly tunnel size 30ftx90ft
what if i wanted to put a fish pond inside later on, say 20ft x 30ft, would i have to tell them this as well, or can i put that in there later on, 
  90% will be for plants but would like a pond in there a small one, 
reason I use aquaponics