Been there done that lol, word of advise is if u really passion about reefing just whack big quality tank. For nano tank what they say about swings is all real, my tank crash b4 becos of noob-ness, even if u pro and manage to keep all tings alive in nano, one day u realized not enough space for corals and fish,u wan more. Now reflecting back, i rather got the big tank in the first place and would have save more money by doing things right the first time lol. Finally for big tanks u need to plan around it, like are u moving hs soon, regular travel cos of work or baby commitments. Really need to think things thru as reef tank really need to put effort to look nice no joke, if u slack on maintenance u will get a shitty tank and waste ur own time & money only...just sharing my 2 cents Sent from Singapore Reef Club mobile app