Come to think of it I actually spoke to the LFS I purchased the tank from first and they said I was on a list of purchasers they needed to call. They then asked me to register the tank and they contacted the Red Sea rep to make sure he then contacted me, which he did via email. I’m pretty sure Red Sea contacted stores in Aus to make sure XXL750 owners that they had sold to were notified. Sorry it was a while ago now lolFrom my understanding - everyone that 'registered' their tank with RedSea was notified. Also - the dealer from whom I bought mine notified and installed mine. If they didnt notify that is terrible customer service. Having said that - I'm not sure I was notified by RedSea - I do not see any email from them - but I did contact them by phone and they said 'I was already on the list' from my dealer.