I have a newly set up tank with all live rock and new sand and was considering using it before I began moving everything over from small 28g. tank has been running now for 2 weeks now. and the rocks I had in a bucket with a powerhead and heater for another 2-3weeks before that after I purchased them live.
Not sure If I need it tho. as my parameters are all reading
Nitrite: 0
Nitrate: 0
Ammonia: 0
salinity: 1.025