i think its a good guide but what some people tend to get away with is amazing atm i have a tank with 1 figure8 puffer, a small (atm ) fire eel ,6 brown haps(small) a couple baby convicts and about 30 peacock fry and an adult peacock i was too scared to type this into the stocking tool by the way filter is fluval 104 with a small internal filter and an airstone whilst im getting away with it at the moment its not permanent as i know im gunna have problems down the track like monbsterous fire eel eating everything but at the moment even the peacock fry which are 1cm long stripped last week are not being eaten