Light acclimation

[Myka]

Originally Posted by Aquattro

Ya, the 150s were in a coralife fixture (10k), not great reflectors for SPS. CL tar ballasts. Now, I'm using AquaConnect 400w SE on Lumatek electonic ballasts. Yes, it's a huge jump.
Actinics are on from 8am - 10pm.

I'm thinking you're right with a change every few days instead of every day.

Ok, then I think your best bet is what I said here:

Originally Posted by Myka

then turn the MH on in the middle of the usual photoperiod increasing 30 minutes alternating from adding it to the beginning and adding it to the end every 2-3 days.

It causes a lot of harm if you push it too fast. It's not a bad idea to raise the light as well as other's have suggested.