sps lighting help

[Reefaddictor]

Just swaped out the old MH 250w with a different brand new bulbs. Most my sps went to shock, some look some what bleached pale but not like bleaching white and polyps retracted. I did cut the hrs from 6 hrs a day to 4 hrs a day on the first day and had been 2 days. So what should i do? cut down even more maybe to 2 or 3?

thanks for any input

 

[Reefaddictor]

any tip guys?

 

[mutateddogbone]

cut em down to 1 or 2 hours for a week, then 4 next week then 6 week after until back to normal. if you have controllable ballasts, turn the ballast all the way down

 

[Felixc395]

If possible, lower all your sps to the sand bed or reduce your lighting period. They should hopefully adjust soon and they'll be on there way to thriving. Good luck!

 

[tozzi]

Raise your lights, it will help

 

[reefer31]

Cut the hours on the lights like crazy like everyone has said. I changed out 20k to 10k bulbs and even shaded the corals/lessened the photoperiod and I still burned half of my collection. :/ Some even were wiped out so be carefull.

 

[outy]

if you cant lower the SPS another trick is to put 3-5 layers of screendoor mesh layered over the top of the tank and then every 4 days or so take a layer off and start out with light hours cut way back

 

[tozzi]

if you cant lower the SPS another trick is to put 3-5 layers of screendoor mesh layered over the top of the tank and then every 4 days or so take a layer off and start out with light hours cut way back

Thats another good one, forgot all about it

 

[Reefaddictor]

okay been cut it out to 2 hrs now for the last 2 days but darn. a few got burn sick dont know if i able to save them. lost 1 good size frag of the watermelon. and i removed all the affected sps to the t5 frag tank.

so do you guys think i should do the mesh trick even with 2 hrs of lighting for the remaining sps that are looked okay in the tank? they didnt show any sign of bleaching but the polyp barely sticking out.