GHL Mitra Owners club

[Delphinus]

Oh wow.

The reason I ask is I'm running mine at 6" above the surface, but after 2 months with them, I'm starting to notice colour loss in a lot of SPS (getting way more pastel-ish in colour - polyps have colour but white in between the polyps). Am I running mine too low? I put in 3 Mitras, each replacing a 400W Radiums on lumenarc reflectors.

[xenon]

Originally Posted by Delphinus

Oh wow.

The reason I ask is I'm running mine at 6" above the surface, but after 2 months with them, I'm starting to notice colour loss in a lot of SPS (getting way more pastel-ish in colour - polyps have colour but white in between the polyps). Am I running mine too low? I put in 3 Mitras, each replacing a 400W Radiums on lumenarc reflectors.

I would just dial back the overall intensity. There is no reason to move them up unless you want more light spread.

[JDigital]

I'm running my around 12" off the water surface, but I'm also trying to determine if the LEDs are what is causing my SPS to constantly die. So I've raised them up and dial them down in overall intensity.

[Aqua-Digital]

The units have significant power, if you are losing colour then lower the intensity. I run mine at 80% but only for 2 hours during the peak. 12" above the water.

I cant imagine die off has anything to do with a lamp, the coral would go white due to high intensity before dying and would not be quick.

[Delphinus]

There's no die off (at least not yet), just loss of colour saturation.

I'll try adjusting the programming and lowering the intensity. Sounds like it could be too bright / too close (at least I'm not running at the higher intensity settings!).

[Rice Reef]

Originally Posted by JDigital

I'm running my around 12" off the water surface, but I'm also trying to determine if the LEDs are what is causing my SPS to constantly die. So I've raised them up and dial them down in overall intensity.

Originally Posted by Delphinus

There's no die off (at least not yet), just loss of colour saturation.

I'll try adjusting the programming and lowering the intensity. Sounds like it could be too bright / too close (at least I'm not running at the higher intensity settings!).

I have mine 7 inches above waterline and I find corals on the higher end of the rocks are encrusting and growing better then ones placed lower. Colors are excellent, no colors fading or dying off. With that being said, these corals are sps and I would not place LPS or softies high. I now run 100% intensity for I think 3-4 hrs and I also have a lot of flow in my tank which I think helps as well.

[lastlight]

I've done two things recently even tho you're only supposed to make one change at a time.

- raised the lights a bit each day so the wife doesn't notice. initially she said the light bleed to her spot on the couch was a problem but i did this a while ago without her noticing. now i'm probably 8 or 9 inches off the water and plan to eventually hit 12" or so.

- dropped both my cool white and neutral white by a lot. trying a more blue spectrum to see how things react. i reduced their output a lot while also turning the overall power from 60% to 100%. my tank looks a bit brighter but the corals are probably getting the same or a little less light than before (higher up, less white more blue).

so far so good. my tank was crazy pale and i had a few sps start to go which has never happened to me before.

as i mentioned last night tho tony i've also started feeding heavier too.

[sphelps]

Originally Posted by lastlight

- raised the lights a bit each day so the wife doesn't notice. initially she said the light bleed to her spot on the couch was a problem but i did this a while ago without her noticing. now i'm probably 8 or 9 inches off the water and plan to eventually hit 12" or so.

This could be a great scientific study. Do you know what this could mean for man kind if she doesn't notice that much of an increase in height considering her previous complaints? It's proving a theory we could all only dream about.

[Aqua-Digital]

Just a little Fyi
http://www.canreef.com/vbulletin/sho...wpost&t=101407



Gobble Gobble Gobble

[Aqua-Digital]

Here are some Mitras LED photos to enjoy

Mine first