If you have a stealth heater they can have a click also when the turn on or off. I have had one that I returned because the contacts clicked so loudly.
Oh yeah a hermit or snail shell can also click against the glass sometimes.
Originally Posted by spanko http:///forum/post/2601780
Oh yeah a hermit or snail shell can also click against the glass sometimes.
I had a hermit that was determined to get through a small gap between some LR and the glass for 2 days. eventually he fell off the rock. but for 2 days its was tap tap tap tap tap tap tap tap
persistent little bugger
lol i have all of those things!
i have a green/blue cromis, i have 2 perculas i have like 25 pounds of LR, about 5 hermits.
and i have recently bought a small piece of LR.
there r so many things it could be.
probably a hermit crab trying to climb would be my guess. Especially since you only have a small peice of LR. WHen i had my first tank, my hermits would try climbing up the rocks and such and bounce against the glass making a clicking noise