led's that powerfull????

[ctsps]

Just hooked up 150w units to my tank 48x24x24 and run the blues 10hr and the white 1hr at first and am up to 2 hr and some of my acros and montis have exploded,the flesh coming right off and killed.All other tank parameters are stable,i must have checked alk 10 times with different test kits.I didnt think they were that powerfull i guess im gonna cut back the white light,i used to run 3 250w halides for 10 hrs,any sugestions thank,mike

 

[swannyson7]

I used to run 250 watt Phoenix 14ks and now I'm using three 150w fixtures from ReefFiltration. The PAR readings off of the 150w LED fixtures are close to a 400w halide. I'd cut down on the blues as well and just run a couple hour photoperiod and slowly ramp it up.

 

[akma]

Yea, LED"s are pretty crazy. Need to increase lighting slowly from lower intensity.

 

[Troylee]

They don't look bright but they are!!!! All that power condensed in a little focal area can reek havoc.... Not sure it would blow flesh of of corals but hey anything is possible... Normally I exp bleaching but never tissue loss when acclimating corals to light...

 

[ctsps]

its was both bleaching and rtn,thats the best way to describe it,thanks for the replys i will cut the blue down too

 

[spscrazy]

how high up are your lights? what watt are your bulbs just asking cause I have leds on order & I don't want to fry my tank trying to gauge how high I should put them

 

[CalmSeasQuest]

Depending on your optics, you could be blasting them with MUCH more PAR than your MHs.

For reference, here's a shot showing PAR values under my AquaIllumination LEDS (70 watts each w/40 degree optics.) Due to PAR meter errors in measuring very blue light, it's probable the real PAR values are ~+15%.

 

[iReefer]

dont underestimated the power of led. got a few rtn due to it too lol

 

[Paul_N]

WOW! There is hope for running leds on a 30" tall 220 and keeping clams on the sand! Yes!

 

[extremehobbyist]

if u can take your lenses off i started with mine off and then put them on after a week

 

[chadfarmer]

the blues are as powerful as the white

 

[Just Clownin Around]

Screening on top of tank plus shortened photo period. Dimm if possible

 

[CalmSeasQuest]

the blues are as powerful as the white

In my tests, the SOl Blues (Cree White/Royal Blue/Blue) delivered more PAR to depth than the the SOl Whites (White/White/Blue) using the same power and optics. This does not include PAR meter error likely resulting in higher actual PAR values.

 

[ctsps]

didnt think the blues were as strong,i will change the photo period and slowly increase over time,thanks for all the advice

 

[RonMidtownStomp]

There are a couple of locals who swear that a shorter photo period does not give you what you're looking for, that you HAVE to diffuse or dim the light or else it will still have the same effect. In other words, one hour of way too bright light can do as much damage as 5 hours. Again, I have no data or experience to confirm it, but it's come from some of the most experienced local reefers, and Sac is a pretty densely populated area of highly experienced reefers.

 

[ctsps]

Sounds good

 

[johnanddawn]

one thing people need to be aware of when changing any light and specifically to LED is how disruptive it can be done if not done carefully. people have been talking for years about acclimation when simply replacing old MH bulbs. chaging to LEDs without extreme care will cause issues
i think that both a reduced photoperiod and raising the fixture are needed

 

[thewackyreefer]

one thing people need to be aware of when changing any light and specifically to LED is how disruptive it can be done if not done carefully. people have been talking for years about acclimation when simply replacing old MH bulbs. chaging to LEDs without extreme care will cause issues
i think that both a reduced photoperiod and raising the fixture are needed

I think you're spot on. I've got 2 fixtures that are just too powerful for my tank so I'm upgrading to a more controllable light (AI Sol Blue). When I get mine I'm going to start around 10-15% intensity and ramp it up VERY gradually over a couple months I figure.

 

[Billgax]

In my tests, the SOl Blues (Cree White/Royal Blue/Blue) delivered more PAR to depth than the the SOl Whites (White/White/Blue) using the same power and optics. This does not include PAR meter error likely resulting in higher actual PAR values.

Blue penetrates deeper into the water column... has less to do with power than it has to do with light's various spectral behavior in the water column (attenuation, for instance). ... just sayin'...

 

[butts182]

if u can take your lenses off i started with mine off and then put them on after a week

yes the blues are as powerful as the whites...and i think you should take off the optics first...i personally don't think they are needed unless you have the light very high above the tank or your tank is very deep