I was @ the lfs looking @ 6 foot glass tanks for that infinite field of view effect but for the price of 1 you can get 3 four foot tanks. & the four foot 75gallon are only 1/4 inch glass(lighter) @ 90(gal) they switch to 1/2" glass .Can you imagine lugging around a 1/2 " 6 ' long tank .I think ile go with two 75 gallon 4'/21" high & save a hundred bucks. (any thoughts?)