qestions about crushed coral

[jmon777]

i am staring 40 gallon African cichlid tank that Dennison's i believe are 48 1/4 x 12 3/4 x 16 7/8 and was wondering is 50 pounds of coral enough or should i add more? also i washed this stuff for about 2 hours and still got cloudy water given i was doing it in bath tub with a strainer and 5 gallon bucket. after about 15 hours it settled down but then went to mover the heater to the other side of the tank and put it under the gravel and the tank got cloudy again is this normal? or should try and rinse it some more? there no fish and the tank has not really started to cycle yet.