Sps too much light or no?

[Oscar Bravo]

a few of my sps are getting a little white on the base. I know is not STN

 

[BoomCorals]

I doubt it's light related unless you've made big changes recently.

Has anything else changed recently? Do you know your current ALK levels and have they moved?

 

[Oscar Bravo]

My alk 7-7.6 goes up and down. Can that be it? It had drop ones to 6.5 because my doser broke.

 

[jda]

Do you have a PAR meter? No other way really to know if there is too much light. It could be quality instead of quantity. This is why LEDs can burn coral at 400 PAR where the same coral can take over 1000 PAR from mercury based light sources. It also could be a myriad of other things - a full set of tank parameters could help.

I would not sweat a swing like that... no big deal.

 

[richard.volker]

I also think it's more alk or temp related than lights

 

[Wu Tang Clam]

I’d be checking my salinity and everything used to measure it if my corals started to look like that

 

[Wu Tang Clam]

Sorry double post

 

[Oscar Bravo]

my alk is at 7 now. Cal 500. NO3 10

 

[pjdiddy]

Issues in lighting typically results in bleaching not stn/rtn. My best guess is it is either problem in parameters or pest.

 

[Vteclover]

0,00 phosphate??
Otherwise,been there and couple bleaching acros from the base.