Hi! I am still learning and my tank is about 4 weeks old cycling still. 55 gal tank, 2 large pieces of LR and live sand. My levels are reading
pH: 7.8
Ammonia: 0 ppm
Nitrite: 0.25 ppm
Nitrate: 10 ppm
They were good yesterday, so I'm not sure what would've caused this sudden spike? What do I do...