Thanks for responding.
The tank is a 30 gallon - it it going on its 4th month. I have an underground filter with a powerhead and a double biowheel filter (up to 50 gallons). salt 1.22, 78-79 degrees, ph 8.0-8.2, 0 nitrates, 0 ammonia, 0 nitrites - I have had my water checked by my local dealer...