looking for help/suggestions

[reefknot]

Hi all, have been reading as many threads as I can, but this is the first thread and my intro to this forum. I have to say it is an amasing wealth of info on here, thanks to all .
I have had a 100 gal for about two years now, stumbling along with what I could gain from this site, trying different things. I am struggling with nuisance algea and trying to combat that ( know I have a high bioload, learnt my bulbs need to be changed, increased water flow, added a phosban reactor ) and I think I am beginning to win, BUT...My question is:- I now want to start a 230 Gal and would it be a mistake to use the sand from this 100 gal tank ? I was hoping to cut down on the cycle time for the new tank by usng the substate and live rock, but will this risk re-introducing the nuisance algea ? Will i need to cure all my live rock and buy new sand and go through the normal cycle time for a new tank ?
All suggestions welcome, sorry its a bit long