DARB

I went to check my temp today and saw that my thermostat was broke at the bottom just the housing was broke where all those black beads are what should I do?? Are those little black ball LED

10gallonmadness

First I would do a 35% water change and try to get them up, but they are probably aquarium safe. No I do not think they are led.

DARB

Ya I did my water change but what are those black things at the bottom.

aquarist48

Hello Darb. As long as your thermometer was labeled for aquarium use then nothing inside of it should harm your fish. I've broken many a thermometer over the years in side the tank or filter with no ill effects. I believe the weights in the thermometer are pewter or stainless steel (I'm not exactly sure). Regardless, it won't harm your fish
Ken

DARB

Thanks