Thinking about picking one of these up...Would the 302/402 be sufficient for a 30 gallon tank? Or should I go with the 303/403? Is the 40_ model worth the extra money over the 30_ model?
Running the 402B on my 29 and I have no complaints. Can't really speak the any advantages of the newer model over the older but I
do like knowing that I'm running the supposedly improved model.