Rock turning white

[Murminator]

Where my rock was a nice purple it has turned bright white at the highest point of the rock as if it was splashed with bleach.

Any Ideas??
Ph 8
Temp 79
Ni 0
Na 0
Amm 0

[Buccaneer]

New tank ? ... new lights ? ... new rock ?

[Murminator]

yes....yes....no

[muck]

What do you have for lighting..??

[Buccaneer]

Probably just bleached from the new lights ... what type of lights/bulbs are they ?

[Murminator]

coralife 2 X 65w 10k 24"

[Corey]

has your water level dropped in the tank?

[Murminator]

ummm....yeah everyday I add about a gallon every 3 days...it has never come close to dropping to the level of the rocks... if thats where your going

[SeaHorse_Fanatic]

Any hermit crabs? Mine always seem to feast on coraline algae. :sad:

[danny zubot]

IMO its the new lights. I just upgraded my lighting and noticed some coraline loss on some rocks, aswell as some mild bleaching of corals. It should grow back in time. If I was smart I would have reduced my photo period, and over time gradually increased it again rather than subject everything in my tank to such intense lighting all at once. :redface:

[muck]

You got the rock from Dez, correct?
Was the rock in his sump?
Not sure what lighting he has on that... :confused:
Check with him, but it does sound like a light amount change.
Too much too fast maybe...?

[Murminator]

Yeah it was in his sump I don't think the lighting was the best ....thats what it probably is......so it will turn purple again??

[muck]

It should purple up again as the tank matures. :biggrin:

[Richer]

Sounds like the lights are the cause of the bleeching. Minor bleeching happened to me when I bought some rock from Des (under 192 watts of pc lighting). Then I got some major bleeching when I switch to 2x175watts of MH lighting. After a couple of months, everything is starting to turn purple again.

-Richer