I copied the article (in color) and have it in my tank planning notebook. It is the most informative article I have found to date on large concrete tank construction. when I build my monster tank I will keep an excellent journal so that others may benifit from what I learn. Anytime I dream about becoming rich my mansion plans always include a very large aquaurium. Until I read this article I never thought I could actually afford a monster tank. Now, I not only know I can afford a monster tank but know one way it can be done.