So I finally got a test kit. I feel like a mad scientist with small vials and chemicals and stuff. lol pH in my 55 gallon is around 7.2-7.4 for cichlids. Normal? No ammonia or nitrites, but nitrate level is around 80-100 or so. I know that's high based on what the kit says (around 40 or less), but is this a type of panic situation where you NEVER EVER want those levels to get that high, or just a notice to do more frequent water changes? Occasionally if they get that high is it a big deal? Will it kill fish?