View Full Version : acclimating sps to new stronger light?

05/13/2017, 01:59 PM
Hi guys. I decided to upgrade my lighting from a small pendent 250w hqi light to a 400w radium with the cozumel sun reflector. reason is I don't get enough coverage with the smaller reflector for my cube tank. 30x30x24. my question is how would you acclimate your corals to the new light? Right now I'm running the 250w about 12" off the water for 9 hours a day and 2 24" t5 Blue+ bulbs for 11 hours a day.

05/13/2017, 02:15 PM
I would move the reflector atleast 4-6 inches higher . Also I would cut down on the hours of halide to 5 hours and slowly increase them half hour increment over the course of 2 months.
But best is to borrow or buy a PAR meter and match the current PARs to the new one .


05/14/2017, 05:52 PM
Just go for it. With the larger spread, the 400W will probably put the same output over your area and use the extra to spread more. I would not worry about it.