Metal halide bleach

traddle

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I have seen after is started my new system up that my live rock is bleaching a little, i.e my coralline algae seems to be dying off :-( ??

is it because my lighting is too intense ?? i have a hex nano so it is quite deep running with a 150W metal halide ?? the bulb rating is at 10000 K

Thanks
 

viper357

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Could possibly be the light, it might also be your calcium or alkalinity levels have dropped.
 

traddle

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i checked my ph and its fine at 8.2 ??

thought the calcium would be fine cause i put new RO water in ?? started the system up three days ago ?? shouldnt the calcium be ok ??

I thought of another thing, I DIY'ed the light, it is a double sided bulb but doesnt have the tampered glass covering it ?? will that make difference ??
 

viper357

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Yip, Mekaeel is right, you need to cover that bulb with a piece of glass or everything in your tank will die.
 

traddle

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Damn think you right man ?? makes more sense now :) ill sort it out 2nite ? this is what i have done with the lighting

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traddle

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cool will do :) i am work now but will call the maid to switch it off for me :-( hope its not permanent ????

Damn i feel dumb now :-( well you live you learn :)
 

viper357

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I did something very similar to my MH, but you have to put the glass shield back on. Don't worry, I also learned the hard way, I was cleaning my MH's one day and forgot to put one of the glass pieces back on, needless to say everything on that side of the tank died within a few days until I figured out what was wrong.
 

traddle

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just figured out why I had the huge algae out break which made me restart my system :-( was all my stuff dying and putting phosphates into the water and helping the algae to go wild ??

Thanks for the help :) MASA ROCKS !!!!! :yeahdude::slayer:
 

lanzo

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did you have your rocks out of the water for a long time?
Coraline algae will die if its out of the water for a long time, but will grow back?

Dont know much about the cover glass, but if the gurus say so, why not try it:thumbup:

But do check your ca and alk when your back from work
 

traddle

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shot will do :) got funny feelin its the glass cover ey ?? the rocks where out of the water for like 10 mins max when i did the transfer from geoffs sump.
 

traddle

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well i added the tempered glass and hope it is gonna do the trick this is my DIY job ?? any suggestions ??

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traddle

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oh and its tilted so that the light refracts back onto the rock when the lid is closed cause the halide sits a bit forward rather than dead centre when lid is closed
 

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