The algae by the filter in tank one gives it a unique look.
I will like to reccomend for future competitions a livestock list or a few line discription. If someone goes through the effort of making an accurate bio type some people might not realize that and change their vote based on the effort made. I will also like to know what's in the pond in picture 5?
Nice jobs everyone, I like number 6. Nice aquascape that looks natural. I guess the livestock can't be too big otherwise they would have dug it all up! I like that all the plumbing is hidden too.