OOPs changed lighting systems and now my SPS are dying, how do you go aboutchanging lights on a reef?

[Fishjayfonz]

Hey folks,

Recently I've "upgraded" the lighting system on a 3300G reef from 10 Gen3 Radions to 8 400W 10k/20k metal halide fixture. 6 months ago I added 4 halides to the existing system with no hiccups at all. BUT once I removed most of the original LEDs for 4 more halide fixtures we experienced LOTS of dye off of our SPS colonies :/

Tried my best to match the original PAR and keep the changes as minimal as possible, but alas the reef has seen better days. I believe it was the change in spectrum from VERY daylight 10k look to a more blue spectrum between 20k/10k. The fixtures also have supplemental blue LEDs that produce ~30-50 PAR at the surface which were unfortunately on 24hrs for the first 3 weeks after the new install, now they are on between 06:30-22:30. The main photoperiod of the halides remains unchanged, 09:30-16:30. I think its the change in blue photo period & spectrum causing the issues.

What have you guys done to combat coral die off after a change gone wrong?

 

[BanZI29]

Here is a guide that Current USA put out. it's still viable today.

How to Properly Acclimate Your Corals to LED Lighting

One issue reef hobbyists may encounter when upgrading to new LED lights is corals quickly losing their brilliant colors (bleaching). This is often attributed to stress caused by not allowing the corals to get properly acclimated to the new lighting intensity and color spectrum. When a coral...

current-usa.com

 

[archercorals]

Any pics of what happened?

 

[Fishjayfonz]

Here is a guide that Current USA put out. it's still viable today.

How to Properly Acclimate Your Corals to LED Lighting

One issue reef hobbyists may encounter when upgrading to new LED lights is corals quickly losing their brilliant colors (bleaching). This is often attributed to stress caused by not allowing the corals to get properly acclimated to the new lighting intensity and color spectrum. When a coral...

current-usa.com

Nervous to make more changes as the new lights have been setup for ~1 month now