1st signs of Nitrite????

[NickBee]

Our tank is about a month and a half old now. Never saw a huge spike of ammonia or Nitrate while cycling. Ammonia / Nitrate and Nitrite have been 0 for the last 3 weeks. We did a substrate change this past weekend along with a 10% water change (crushed coral came out, Samoa Pink sand went in). I ran tests tonight to make sure we didn’t disturb the water chemistry….

Tonight’s results:

Ammonia – 0
Nitrate – 0
PH – 8.4
Nitrite - .25
Oxygen – 7 (this test kit came in today, 1st time measuring)
SG – 1.023
Temp – 77

The tank is a 75 Gal fish only with about 100 lbs of live rock. We are running a sump with skimmer.

Is this 1st sign of Nitrite OK? Should any measures be taken yet? Of course I’ll keep an eye on it over the next few days.

Livestock:
1 Small Coral Beauty
2 Small clowns
1 Blue Toby
1 long nose hawk
1 blue damsel
1 CB shrimp
6 Snails

Thanks!