I have a small 10 gallon frag tank with some live rock that is about 4 days old. Yesterday, the seachem alert badge started turning greenish (.05 ppm NH3). Red Sea ammonia test showed 0.25 ppm free ammonia and I did a 25% water change it returned to normal. This evening, the alert badge started to turn slightly green again, and I just checked my free ammonia again and it is 0.8 ppm! Should I do another 25% water change? I'm so worried that my frags are going to die.