Howdy all. I myself have set up a ten gallon tank berlin style about 15 lbs of LR 2 rio 180's pushing o2 and a nice size wad of chaetomorpha. as well as a blue ring named Betty. have had the octo now for about 3 months, tank had been up and running for about 5 months prior. tanks doing great, feeding the blue ring SMALL bits of krill and sliver sides.. twice a week.. (with a feeding stick)!!!! my friend told me about this website. hope to meet new people and learn more 411 about octo's. hope to get some pictures up soon.