hello all, im looking for some advice on how to go about building my first indoor pond. first, the demensions im looking to achive will be 10' long by '4 feet wide by 4 1/2' deep. But i NEED a large viewing window. im thinking an 8' long by 3' tall by 1" thick sheet of acrylic should hold up just fine. ive seen a lot of ponds constructed out of cynder block but i have yet to see a one with a window as large as the one that i would like to use. also how will i have to set the window?