too much light??

martym · #1 11-11-2008, 04:11 PM

Just tested, and mag is still at 1350ppm (Salifert) Could the lighting time be too long? Actinics are on for 12hrs, full lighting for 10hrs

Tom R · #2 11-11-2008, 04:20 PM

Quote:

Originally Posted by martym

Just tested, and mag is still at 1350ppm (Salifert) Could the lighting time be too long? Actinics are on for 12hrs, full lighting for 10hrs

My MH are on for 8:00 hrs and my Actinics are on for 9:00 hrs so you might want to reduce your photo period a little.

Tom R

tang daddy · #3 11-11-2008, 04:26 PM

Tom has a good point there about t5, they sometimes can bleach corals mine are on for 6 hrs a day atinics for 10hrs, atinics are giesman blue plus x 2 54w.

martym · #4 11-11-2008, 04:29 PM

Thanks for info. I will try that. It will be hard to move as it has attached to the LR. It is pretty much on the bottom of the tank now. I'll see what I can do

Tom R · #5 11-11-2008, 04:40 PM

Quote:

Originally Posted by martym

Thanks for info. I will try that. It will be hard to move as it has attached to the LR. It is pretty much on the bottom of the tank now. I'll see what I can do

Martym

If the corals are going to be hard to move then I would try to reduces the photo period for 3 to 4 weeks and then slowly increase it.

Keep in mind that even where they come from (Fiji etc) peak sun is only 3 to 4 hours. Not that our lights can reproduce actual sunlight.

Tom R