Yes, we used the old wood from the deck for the lower part of the walls and we used a old Hot tub that we originally got for a QT tank for wrapping the 400 gallon S&G tank and 50 gallon trickle tower. The 400 gallon settling tank, 200 gallon airlift/bio, and 55 gallon sump tank are under the wood flooring. I am in the Bay Area. The pond is inside a 2 story sun room overlooking our artificial turf back yard.