rocks producing bubbles!!?!?!

[qwertman321]

hi, anyone can explain to me why my rock always gets cover by a layer of tiny bubbles. i usually fan them off but within an hour or so, they will be back again!

[benjamintse]

is ur return pump of ur tank producing tiny bubbles???cause smt they can accumalate and become a bigger bubble

[hotsoup]

Recently did you just upgrade your lighting system?

[qwertman321]

no bubbles leaking to tank, and i have recently upgrade my light to Cree LED light.

[hotsoup]

Based on my experience, this happens when there is a change in lighting(stronger light). It should go away in a couple of days

[qwertman321]

why ? and this happen for 1 and the half weeks edi.