Long green algae

Hi, can anyone give me some advice plz..... I am a newbie to marine, I have been reading and watching lots of videos on it, for a few months now, I brought all my bits and have just started my tank up 2 days ago..it is a used tank only 6 mths old, aqua one reef 195 tank, (195 litres) with a weir, I brought 24kg of dry Pukani rock put it through a cleaning & scrubbing process & left it in a solution of bleach for 2 days then cleaned it off & dried it out, I am curing & cycling at the same time in my tank (no fish) just sand & the rock, no lights I have read it's better without them, I am running a sump with 2 skimmers... it goes, 1..water in, 2..aqua one protein skimmer G220 with charcoal sock & 2 150w heaters temp for tank set at 25deg, 3..aqua medic turboflotor blue 1000 protein skimmer with pukani rock and have put some live rock in there, 4th & last section just the return pump..
I have put just under 2 inch bed of crushed coral 0.3, and the rock is in there I also bought a couple of kilo of live rock from my lfs to help it on its way, it's been going 2days now well this is the 3rd day, and I have just noticed ( the weir is in the middle at the back of the tank) and there is 3 or 4 lots of long green algae growing on it.... I don't think I want this in the tank do I?? what can I do to get rid of it.. appreciate any help :( thanx