things aren't looking too bad. the tank is slowly clearing, and i'm preparing to change 20G. it's a 120G tank. i'll probably do another tomorrow. had to run to town to get water, carbon, and a new ammonia test kit. haven't checked ammonia yet, but calcium is really low(250), i've been trying to get my alk up lately, and had a large stand of halimeida. i think maybe between the two, i've depleted the calcium, and caused the halimeida to crash. i noticed a little of it was turning white yesterday, and meant to check my calcium, but somehow got distracted. i guess this is the price to pay.