im gonna get another tank for my room maybe like a 125 gal and i want to get a bigger octo then my bimac i have now cause hes 4 months old now and hasnt really grown...... i want one that will be the size of the one in the "squirt" video we have in the video gallery..... what kind is that??? my bimac's mantle is maybe the size of a golf ball with about 6-8 inch arms