Cycling help

[alexewing95]

Starting a new tank, added ammonia and prostart 900 about a month ago. Checked water a few days ago and ammonia nitrite and nitrate all high so I did a small water change. Check water again yesterday and this is what it looks like ammonia looks fine but nitrite and nitrate still high. Do I do a larger water change?

 

[Knucker]

How big of a water change did you do the first time? I've always heard 50%