Jewel Cichlid randomly dies, worried about the rest of my tank

Tazman

If they are eating fine, no problem with the beef heart, the yellow lab should not be fed that though, so offer some flakes for it.

Second question is nearly impossible to answer without knowing where the tank is at now. Usually a full cycle will take 6-8 weeks, once you get the test kit it will really help to be able to answer that. If you do purchase the test kit, then before testing for Nitrate there is important information you need to know. I wont say what it is now until you have the kit.

CallieDee

I honestly don't think the lab is there anymore, I really think he got eaten...we haven't seen him all day

Tazman

Ah yes you did mention that.

Check in decorations if you have any, you should still look for his/her body as it will cause water problems issues on top of what you have already.