300 watt Viparspecta bleaching coral

[Sully32]

I am running a 300 watt Viparspectra over my 40 breeder, but I am having issues with it bleaching SPS and zoas not opening much. I have the white channel set at 1% and the blue channel set at 15%. The light is mounted 13" from the water surface. The blue channel is on for 12 hours per day and the white channel is on for 10 hours.

Is anyone else running this light over a similar size tank? If so, could you provide some tips on your settings and photo period?

Thanks in advance!

 

[Tahoe61]

Not much help but I run a 165 watts Viparspectra on a 40 at 4% white and 90% white for 10 hours, 12 inches above.
Keeping and growing well Zoanthids, too well in fact, and SPS.
Perhaps back off total lighting period.
Do the corals appear more open at the beginning of the photoperiod?

Next check N/P and par if able.

 

[Sully32]

There doesn't seem to be a correlation between time of day and coral opening up. I have considered the lighting period adjustment, but I am unsure as what to change to. I have a 20" toadstool that is doing great and about 10 bubble tips that are thriving.

Specfic gravity: 1.025
Temp: 77-78F
Cal: ~410
Mag: ~1300
Alk: ~8
NO2 and NO3: undetectable
PO4: ~0.2-0.3

 

[piranhaman00]

NO3 zero bad, they are bleaching from nutrient deficiency.

 

[Sully32]

That is something that I have been working on too. I guess I overlooked that as a cause of bleaching. I have 9 fish and feed heavily. I have been contemplating removing macros from my refugium and putting my skimmer on a timer.

 

[Spare time]

That is something that I have been working on too. I guess I overlooked that as a cause of bleaching. I have 9 fish and feed heavily. I have been contemplating removing macros from my refugium and putting my skimmer on a timer.

Just have the refugium on for a shorter period of time. Skimmer on a timer wouldn't be bad either

 

[sfin52]

Just have the refugium on for a shorter period of time. Skimmer on a timer wouldn't be bad either

Cut you lights on the macro back to 1 he adjust from there

 

[rgulrich]

Did you set these up with a PAR meter? If not, i'd highly recommend it.
Cheers,
Ray

 

[JMAwoodworks]

Did you set these up with a PAR meter? If not, i'd highly recommend it.
Cheers,
Ray

I have the same light on a 40 breeder white set @1 and the blues set @ 25 so far and 6" off the water. 10 hr blue and 4 1/2 white only been using for 3 weeks. Going to work up to 35-40 blue keeping the whites @1 I think. Everthing is doing great

 

[Sully32]

I have the intensity turned down to 1% and 15% right now. This was set up with a par meter at 5% white channel and 70% blue channel.

I am really thinking and agreeing that my nutrients are too low. I have cut back on skimming and refugium photoperiod. We will see how that changes things.

 

[reef_ninja]

I realize Im a couple months behind, but wondering how things worked out for you? I have the same light and tank, and trying to gauge lighting effects and whatnot.

 

[JMAwoodworks]

Are those par numbers with or without the lenses on?