LED Confusion

[Comtek]

I have a home made LED fixture
44 XPG cool white and 44 XPE Royal blue.
they are driven with meanwell eln60-48P's 11 per string.
i have them turned all the way down on the meanwell's
they are dimmed with an apex (0-10v)

i used to run 55 LEDs of each pretty much full
but removed one string of each and now i'm only running 22 of each
i still have 2 more string of each that i turned off.

my tank is a standard 125 gallon (72"L x 18"W x 24"H)
i run my light about 6 - 8 inches above the tank.
when i was running all 55 of each i ended up burning alot of my corals.
so now i'm running 22 of each. set at about 50% with a 2 hour ramp up and down.
my question is how many do you guys that use leds have over you tank.
i'm wondering if i need more light or less cuz my tank still is not that great. none of my corals are opening up.
my water paramaters are on where they should be.
all i have is a few softies in my tank. but i want to keep sps.
any other needed info let me know

 

[Anemonebuff]

You may have them too close to the water and not too many. Plus, acclimation is necessary with LEDs.

Do you use optics? 40*/60*/80*?

LEDs also create "hot spots". Directly below the diode there will be somewhat of a hot spot, more so if you use 40* and less as there are wider or no optics. Hot spots will fry a coral with PAR, that's why acclimation is necessary. Either slowly increase photoperiod or shield light with mesh or the like and remove layers as necessary.

Softies tend to take the switch worse than LPS and SPS IME, less so with SPS. I did bleach a devils hand and some zoas when I switched. I did bleach two monti's as well.

I use 5 Rapid LED PAR38s and 6 Boost LED PAR30s over mine for a total of 65 LEDs driven at approx. 2 watts each.

 

[Comtek]

i do not have any optics

 

[Anemonebuff]

I would say too much light, but dimming should do. It will take them time to acclimate to LEDs. Why that is I don't know, but there is something different about the LED diodes as opposed to MH or T5.Give it some time, keep parameters up.

 

[alton]

Buy or borrow a meter