hello bro.... $4800!!!!! phew.... I paid $850 for my nanocube + set-up, corals and fishes and all the bros here Whack!!! me left, right centre for being so naive and accepting the so call maintenance free tank offer from TM fish shop. Now my advise to you is to look around and u will get far better deal. The bros here im sure can help you. Infact, I beggining to realise that there is no such thing as hassle free tank. You have to do something at least to keep your tank going. Im now beginning to to testing with all the test kit that Ive bought. It kinda fun actually. And I've learn to top up tap water only after conditioning the tap water with anti chlorine and running it at least one day. But to be honest, for the first month, I just top up my tank with purely tap water but nothing happen. But I want to be a responsible reefer, so I took all the advise Ican get here and follow them gradually. So far my nanocube is surviving after 2 1/2 mths without chiller and skimmer.