Yep, im afraid its an 18gal! It had 2 goldfish. Apparently one died of "Fungus". It's apparently been set up for 3-4 weeks and has never had a water change. Unless it swims to the surface, you can't see the fish. Apparently it has alot of plants (i couldn't see any though). I took the ammonia test twice, both came at 0.
"Its's in more than just the fishes interest to fix this pond...I'm just picturing a large stagnant puddle, not an attractive garden feature."
-Pretty much sums up what it is.
Now that the ammonia test came out wrong he thinks im big headed and that i always think im right etc etc and now wont listen to me in anything and has now decided that since the stats came out fine... it doesn't need any water changes.... Arrgghh some people.