Well since this is quite an expensive hobby, or can be if you cant get frequent sources of live food, im thinkin of ways to make it a little cheaper and easier. Im considering keeping my live food i.e. crabs, snails, shrimp? (crabs predominently) in the sump. Basically cause I havnt the room for another tank, other than the bedroom and dont fancy the noise of a pump ruining my zzzz's. As by buying a bag of live crabs and slingin em in the sump they are there as as easy source. This posed some questions..... 1) If I have a sizable colony will their waste effect the quality of the water? Even if it doesnt, it would be intresting to know the level of effect. 2) They would need feeding of'course, but would they take their food from the water that is comin into the sump or would they require some specific food? 3) Actually what do they eat!!?? 4) If theres a load in there, they are bound to get fruity at some point so would they breed? and if so how long do crabs take to grow/ is this quite feasible etc 5)Can you think of any other sources of live food that could be kept in there makin it a good cost effective exercise? As i dont want to feed little inky the same stuff all the time and make him bang his head on the wall with boredom. 6) What do reckon on this idea? Sorry theres so many questions with this but im thinkin this is a good way to make it a more feasible hobby with limited space. Cheers in advance.