This tank has been set up since Dec. 19. with no major problems..until now.
On 2-16 I did regular 2 week maintence and a 30G water change. Everything was fine.(150G fish only tank, Ammonia 0, nitrites 0, nitrates 0, ph 8.2, specific gravity 1.023, Alk 200)
Yesterday's test results were
Ammonia...