GHL Mitras Club

[Jony375]

Originally Posted by AQD_ottawa

allmost I can help you here

The Mitras uses unique reflectors NOT optics, the light is filtered into a wide but effective downward cone enabling both high par and also complete LED convergence. You also get wide coverage

the lamp can easily cover a 36x30x30 cubic area, we recently had a unit working on a 48" deep system just to give you some head spin of the power of this unit, but its not all about power the spectrum also holds its own.

From this please work your lighting needs on the above figures of 36x30 surface area, even though we have a tank running one unit on 40"x36"

My advise would be

Length ways = 2 units
Width ways = 3 units

Intone it recommends to me that but I am going to have 100 % sps as the whole aquarium, perfectly I can put: 2 lengthways: _____ ______ Or 3 widthways: | | | have I understood It well?

[reefmutt]

hey Jony, yes that is exactly what he meant. with 3 mitras going | | | you will have great coverage..

[Jony375]

And do they want to say that if I put 3 units in this position, me the light is not going to stand out out of the aquarium? That is to say, if an alone screen covers 36x30 inches that are 90x75 cm, if I put them widthways and to 30cm of the level of the water, is light going to go out for me ahead and behind the aquarium not?

[AQD_ottawa]

with any light not within a canopy you will get over spill. If this is a concern for you then do this. - expect you need 3 lamps but start with 2 see how that goes and then if required go up to 3. Better to start with too little than too many

[Jony375]

Originally Posted by AQD_ottawa

with any light not within a canopy you will get over spill. If this is a concern for you then do this. - expect you need 3 lamps but start with 2 see how that goes and then if required go up to 3. Better to start with too little than too many

did not understand the first part? With any light not within a canopy you will get over spill.

[AQD_ottawa]

meaning if the lamp is not in an enclosure (tank hood/Lid) light will always shine outside the tank.

Mitras can not be put in an enclosure.

[reefmutt]

All types of lighting, whether it is m.h. or t5 or led will have some light leakage.
If you hang the mitras aprox. 10cm above the water (like the instructions say) you will have minimal light leakage

[Jony375]

OK, now what I understood. This clear that liz will come out just like the current T5, but to what I meant I is that will leave more light ma if I put 3 units than if I put them lengthwise, widthwise not?

[Flagswipe]

Well I think I am finally cured of my need to experiment with LED. I posted some pics approx 10 days ago with some pretty healthy, fairly well coloured up SPS.
Now I have a tank full if melting SPS
Not RTN or STN but burnt tips, bleaching, now algae growing on them. 3 pieces look ok still with decent colour

Acans on the bottom look nice

Alk, calc good. No other changes.

Signed
Depressed

[AQD_ottawa]

Sadly this is classic acclimatization issues, if you put SPS under LED at too high power you will burn them, they must go through a very gradual acclimatization process starting at as little as 30% going up by 5% every 3-4 days.

This goes with every LED lamp on the market.

Mitras is a lot more sympathetic to this as it has no hot spots but even with Mitras you still must go slowly.

Sorry for you losses

[Flagswipe]

I used Rodney's program (absolutely no blame here) in high efficiency not high output and put the single unit 20" over the tank. I thought this would be plenty of leeway for acclimating everything

Thanks for the condolences

Originally Posted by AQD_ottawa

Sadly this is classic acclimatization issues, if you put SPS under LED at too high power you will burn them, they must go through a very gradual acclimatization process starting at as little as 30% going up by 5% every 3-4 days.

This goes with every LED lamp on the market.

Mitras is a lot more sympathetic to this as it has no hot spots but even with Mitras you still must go slowly.

Sorry for you losses

[AQD_ottawa]

Rodneys system is very acclimatized the Mitras can illuminate strongly down to 48" (we have a system running 18 Mitras to that depth) so raising by 20" will sadly not be enough. You do still have to acclimatize the corals under low light settings for a good 10 days raising the % slowly.

Typically it will be deep water SPS that suffer first.

[AQD_ottawa]

Double post again - cmon RC hurry up and change over servers!

[M007]

Originally Posted by Flagswipe

I used Rodney's program (absolutely no blame here) in high efficiency not high output and put the single unit 20" over the tank. I thought this would be plenty of leeway for acclimating everything

Thanks for the condolences

Hey Dwayne, sorry for the frustration. Seriously you have to ramp up slowly. I fried a bunch of acro with my first LED fixture, taught me to go easy when I set up with Mitras. I found my sweet spot was 20cm over water and started at 75% intensity. Went to 80% after 6 weeks and just last weekend went to 85%.

[Flagswipe]

Youd think a guy with a few years experience and some time with other LED platforms would be able to figure it out, well nope!

Either way, the Geisman fixture is back up over the tank and lighting up the graveyard. Will leave the tank alone for a week and see if the clingers fight back, if not I will dismantle and start again

Originally Posted by M007

Hey Dwayne, sorry for the frustration. Seriously you have to ramp up slowly. I fried a bunch of acro with my first LED fixture, taught me to go easy when I set up with Mitras. I found my sweet spot was 20cm over water and started at 75% intensity. Went to 80% after 6 weeks and just last weekend went to 85%.

[BigAl2007]

Originally Posted by Flagswipe

Youd think a guy with a few years experience and some time with other LED platforms would be able to figure it out, well nope!

Either way, the Geisman fixture is back up over the tank and lighting up the graveyard. Will leave the tank alone for a week and see if the clingers fight back, if not I will dismantle and start again

Good luck and hopefully your tank will recover fully and quickly.

[AQD_ottawa]

So you do not go through it again I strongly advice acclimatizing them back under the Mitras on low setting for example 30% for a week, if you keep changing back and forth you run more risk of adding more stress.

[reefmutt]

Yes, I tend to agree. .
If the mitras is the light you will use long term, it would seem (to me) prudent to acclimate them under it.

[rodneyri]

I wonder why I didn't have any issue moving from the ATI power straight to the Mitras

[Rotknee]

I went from 5 Ai Sol Blues 9" ATWL running at 100% (with 70 degree optics) to 3 Mitras at 100% (high output mode) also at 9" ATWL. I've since added three new acros that are doing well. The 3 acros were previously kept directly under 250w MH lamps. I did acclimate for a full seven days going from 60% to 100% over that time period.

On a side note, the only time I have burned the tips of my acros was when my Alkalinity was greater than 9 using my Ai LEDs.

[Reef_Paddy]

Does ordering and paying for a Mitras make me a club member or do I need to wait for delivery? My little RSM130D will never look the same again!

[SERVO]

Originally Posted by AQD_ottawa

Rodneys system is very acclimatized the Mitras can illuminate strongly down to 48" (we have a system running 18 Mitras to that depth) so raising by 20" will sadly not be enough. You do still have to acclimatize the corals under low light settings for a good 10 days raising the % slowly.

Typically it will be deep water SPS that suffer first.

Holy Moly!! 18 fixtures!!!! Yikes! What are the dimensions of the tank?

Sent from my DROID BIONIC using Tapatalk 2

[MeanGreenEyes]

rodneyri and other Mitras owners...I'm curious and have a few questions...looking for an in depth conversation on this...

I've been using rodneyri's light project since installing the fixture over my tank and am curious if this is optimal in regards to spectrum. What are all of you using? How do you as an individual user determine this? I ask because I want to ensure that I'm utilizing the full capabilities of the fixture.

[AQD_ottawa]

Originally Posted by SERVO

Holy Moly!! 18 fixtures!!!! Yikes! What are the dimensions of the tank?

Sent from my DROID BIONIC using Tapatalk 2

The owner does not want me releasing details until the project is finished, I am awaiting posting approval

[Jony375]

Good for all. I get two screens mitrax morning 6100, I finally decided to try two and see if it's low light'll buy a third screen. I wanted to ask that I put up with that power and as I start to slowly uploading in so they do not my corals?