yeah i had my house built in 2000 , its concrete , thanks for the tip , i do like everyone 2 cents , some are helpfull , nice just to see way other people think , just like the stand , i seen some use 4x4 and seen people use 2x6 and other ways , when i did my stand i wanted the front open much as i could and didnt want the bottom off the floor and i wanted the 1 side on stand open cause i can move wet dry filter in and out easy , thats my plan for the stand , and i talk to everone around me,, co workers and stuff , most says you need to do this and that , i allway say ,humm you build or read about plywood tank ans stands , they say no , and i think , why am i even listen to this lol anyway