Tunze 7097 controller?

[Reef.ductionist]

Hello Tunze folks,
I am considering purchasing the Tunze submersible led for my reef aquarium. However, my decision to purchase the tunze led largely rests on whether I will be able to use it to replicate natural lighting cycles: as found in nature, all of which brings me full circle back to the question:
•When, if ever, do you intend to manufacture rhe 7097 controller?•

Thanks,
Reef.ductionist

 

[rvitko]

The 7097 and a new 8850 LED light are due next month (July)-

http://www.tunze.com/fileadmin/downloads_en/interzooen.pdf

Interzoo 2014 - YouTube

 

[Reef.ductionist]

Hello and thanks for responding. The attached links are very informative, however I see that you folks have provided information regarding the PAR {Photosynthetic Active Radiation} values of the 8850.00 led aquarium light. As many of us aquarists are now becoming aware , arguably the best measurement of a reef aquarium led are the numbers resulting from testing relating to the PUR {Photosynthetic Usable RADIATION}
PUR measures the radiation wavelengths that are ofimportance in that these are the values that ARE actually USED by zooanthellae.
Two led fixtures can have the same PAR but one can have a higher PUR value, which is what will be used by a coral. Some zooanthellae for example use PUR values nearer the 500 level. Would you mind releasing the PUR {photosynthetic usable radiation} figures for this LED ? or running tests and then
revealing the figures?

 

[rvitko]

I am not sure that we have such info, frankly this is the first I have heard of this unit of measure. I will see if they have a way to attain this number.

 

[Reef.ductionist]

Your willingness to ask is much appreciated, thank you.

 

[Reef.ductionist]

Hi there, Tunze, its been over a week since we last spoke regarding the true pur values of the led by tunze. When do you think you will be releasing the pur values?

 

[rvitko]

I sent a request after your last post for the info and have not received an answer. I don't know for sure that I will get one as I don't know if they have a meter which can measure in this unit or if it is something they can convert to based on PAR and spectral graphs. Interzoo is much more than just a trade show for us, when the show ends, R & D sessions for the next 2 year development cycle kick off and then after a week of that, everyone takes some time off, it will be a few more days before normal office hours resume for most of the staff. If I don't hear back by next week, I will follow up, but I cannot promise they will have a PUR value available.

 

[rvitko]

Let me look into this further.

 

[rvitko]

I have tried on my own to find you an answer, I am not having much success but here is what I can say. PUR is not something that is apparently simply gathered by a meter, it is a calculation and to be absolutely correct is unique to each coral or plants species depending on the depth and habit they inhabit. The best answer I could find that put it into something quantifiable by a layman was that it is generally the PAR minus the emission in the range of 550-620nm. To the best of what I can garner from our spectral graph and PAR chart it would seem that for our light it is roughly 4/5ths of the par as only the light between the two bars on either side of 580 are excluded, the yellowish part of the spectrum. I could not find who first coined the term PUR and if you know this, I would be interested as this seems intriguing but I am skeptical that this was not some marketing speak for horticulture lights that emit a purple light from combining red and blue LED's, I don't doubt the effect or benefit is real, but these lights are not for looks, just for growing and I don't know that achieving the highest PUR at the cost of all else or highest PUR to PAR ratio is going to deliver a light anyone finds aesthetically pleasing.

 

[Reef.ductionist]

Alright thanks for looking into things further. I have just bought the blue led version. I bought it because it fits nicely under the tank hood. Apart from that I did notice after buying it and reading the instruction booklet that it says absolutely nothing regarding its use for a stoney coral aquarium. I am thus led to my next question, which Ill admit came as a bit of an afterthought:
Are the blue leds in the 8820 the same as the blue leds in the 8830 marine led fixture? Is this 180.00 light just for sipplemental lighting or will the coral in my tank benefit from it?
Thanks

 

[Reef.ductionist]

Hi there I researched the led and it is suitable for coral so I am very happy with the led light. I really want to buy the 7097 controller but I live in Vancouver, Canada. Do you know when it will be available on store shelves here? and on a side note does the controller have a storm function?
Thanks

 

[rvitko]

The 7097 should be available around the same time worldwide, late July. It will have a storm mode.

The Marine LED uses the same blue LED's as the Blue LED, they are a light spectrum heavily utilized by photosynthetic corals, 450-470nm, however, because they lack any other spectra, they are generally intended as a supplement and not as a sole source of light.

 

[Reef.ductionist]

Ok thanks,
Does Storm mode mean 'lightning' too? (which is generally what reef aquarists consider storm mode)

 

[rvitko]

Yes, it will create a lightning effect and a storm surge with any attached pumps.

 

[Reef.ductionist]

That's great news. When will it be available for ordering over internet to Canadians?

 

[rvitko]

They should be available worldwide at about the same time, approx late July.