Hello! This may be a stupid question, but I have a bunch of aquarium plants that died and then just sat in the water for a week while I was away (I forgot to ask the person who fed my fish to turn on and off the aquarium light) I removed most of the dead plant matter, but is it possible this caused an ammonia spoke or something similar? Should I test my water? I will be doing a water change today. My tank is 10 gallons and houses a betta and two Nerite snails, and is cycled.