OK IM A NEWBIE, I HAVE A 60 GAL TANK WITH 50 LBS OF LR AND SAND. I'VE HAD THE TANK RUNNING FOR 2 WEEKS NOW. DOES THE CYCLE START ONLY WHEN I ADD FISH? HAS IT STARTED ALREADY? HOW LONG SHOULD I WAIT BEFORE ADDING FISH?
WHAT IS MEANT BY CYCLING THE TANK? THANK YOU