Hi! I am anew marine aquarist and need ssoooo much help! The first thing is that my tank has been set up for 4-5 weeks and it won't "cycle". I have not changed the water only topped it up and have been scrapping off all the brown and green mold on the glass yet the amonia alert,nitrite and nitrate tests show still no sign of cycling. If you can help please do! I will give more info as to what is in tank equipement and livestock wise if needed.