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Showing results 1 to 25 of 91
Search took 0.02 seconds. Search: Posts Made By: RiddleLabs
Forum: Tridacnid Clams and other Mollusks 11/24/2007, 12:56 AM
Replies: 17
Views: 1,075
Posted By RiddleLabs
Aloha all, Interesting topic - here's the...

Aloha all,

Interesting topic - here's the scoop. Tridacna's mantles are layer and these have different refractive indices. That's why they appear most colrful from the top, but appear to lose...
Forum: Advanced Topics 11/12/2007, 02:09 PM
Replies: 50
Views: 5,764
Posted By RiddleLabs
Hahnmeister, >>Okay, I have a pink prostrata...

Hahnmeister,
>>Okay, I have a pink prostrata with blue tips. This is the best example. I would have to keep it under at least 300, if not 400+ microMol/m2/s of light with halides for it to color up....
Forum: Advanced Topics 11/11/2007, 08:19 PM
Replies: 50
Views: 5,764
Posted By RiddleLabs
Aloha Hahnmeister, Its a bit like this......

Aloha Hahnmeister,

Its a bit like this... when Home Depot was changing all their halides out for T5s, at the 50/50 point, you could look into the halide section of the store, and things were...
Forum: Advanced Topics 11/10/2007, 06:09 PM
Replies: 50
Views: 5,764
Posted By RiddleLabs
Aloha H2OENG- I have done some work with...

Aloha H2OENG-

I have done some work with gels and filters, mostly with calculating which filter to use to give a desired result.
There is a formula to determine affects of filters on the...
Forum: Advanced Topics 11/08/2007, 02:23 AM
Replies: 50
Views: 5,764
Posted By RiddleLabs
Aloha Hahnmeister, I need to digest your...

Aloha Hahnmeister,

I need to digest your comments before making mine. A two-day business trip to Honolulu really mucks up the important things in life ;-).

Will get back to you Saturday, if not...
Forum: Advanced Topics 11/07/2007, 07:48 PM
Replies: 50
Views: 5,764
Posted By RiddleLabs
Aloha Chris, >>What about zoox. clade,...

Aloha Chris,

>>What about zoox. clade, temp., etc. do you think needs to be considered?<<

There are other reasons that colorful corals could have a lower electron transport rate (as...
Forum: Advanced Topics 11/07/2007, 04:02 PM
Replies: 50
Views: 5,764
Posted By RiddleLabs
Aloha Chris, >>The effects of intense blue...

Aloha Chris,

>>The effects of intense blue light should be nearly synonamous with the effects of intense while light on photosynthesis. <<
If by ‘intense’ we mean blue-saturated or blue...
Forum: Advanced Topics 11/07/2007, 01:18 AM
Replies: 50
Views: 5,764
Posted By RiddleLabs
Aloha CJ, >>But Dana, excessive blue light is...

Aloha CJ,
>>But Dana, excessive blue light is synonamous with excessively intense light, no?<<
Hmmm… No. Warmer color (red for example) is associated with the spectral signature of shallow depths...
Forum: Advanced Topics 10/30/2007, 12:23 AM
Replies: 50
Views: 5,764
Posted By RiddleLabs
Aloha all, My 2 cents worth - blue light...

Aloha all,

My 2 cents worth - blue light induces a chemical change in xanthophylls (diadinoxanthin and diadinoxanthin) - see the absorption curve for this pigments in UNESCO's Phytoplankton...
Forum: Lighting, Filtration & Other Equipment 10/15/2007, 12:50 AM
Replies: 99
Views: 189,502
Posted By RiddleLabs
Aloha Hahnmeister, The Germans (and many...

Aloha Hahnmeister,

The Germans (and many other researchers for that matter) are correct in that blue light is largely responsible for photoinhibition.
Blue light can trigger dynamic...
Forum: SPS Keepers 10/09/2007, 10:58 PM
Replies: 50
Views: 2,685
Posted By RiddleLabs
Aloha Mikee, I'm going to guess that your...

Aloha Mikee,

I'm going to guess that your metal halide is not shielded for UV radiation. UV can bleach some coral pigments and leave only green to fluoresce. See October's Advanced Aquarist for...
Forum: SPS Keepers 10/07/2007, 01:28 AM
Replies: 196
Views: 6,869
Posted By RiddleLabs
Aloha all, Just a quick note from the...

Aloha all,

Just a quick note from the trenches in sunny Hawaii...

Re: Nutrient loading and coloration. Hawaiian waters (nearshore on the Big Island) aren't the proverbial 'nutrient desert'....
Forum: Advanced Topics 09/29/2007, 11:50 PM
Replies: 2
Views: 414
Posted By RiddleLabs
Aloha Faz, UV, in the 390-395nm range, is...

Aloha Faz,

UV, in the 390-395nm range, is usuable by zooxanthellae. This range is also known to induce coloration in some corals.

Things get a little complicated - its not just the spectral...
Forum: Lighting, Filtration & Other Equipment 08/26/2007, 05:28 PM
Replies: 3
Views: 317
Posted By RiddleLabs
Aqua Illumination LED Photos & Info

Aloha,

I've gathered some data for the 12" Aqua Illumination LED. In this array there are 24 LEDs (and two cooling fans). Total power draw is 88 watts. PAR at depth (14.25" water depth, with the...
Forum: Lighting, Filtration & Other Equipment 08/18/2007, 02:53 AM
Replies: 49
Views: 2,624
Posted By RiddleLabs
Aloha all, I have a prototype and...

Aloha all,

I have a prototype and near-production units from Aqua Illumination in the lab now. Send questions, if you wish, and I'll incorporate them into the product review.

Chris tells me he...
Forum: Reef Discussion 05/24/2007, 02:00 AM
Replies: 65
Views: 2,593
Posted By RiddleLabs
Aloha all, I see Rich has chosen to...

Aloha all,

I see Rich has chosen to 'poor-mouth' my Solaris review again - which is OK (everyone's entitled to an opinion), but from my perspective this is getting old.

Rich, at first,...
Forum: Advanced Topics 05/24/2007, 01:41 AM
Replies: 39
Views: 3,459
Posted By RiddleLabs
Aloha Hahnmeister, UV will cause...

Aloha Hahnmeister,

UV will cause photoinhibition, but the exact reason (at least in the cases of artificially-produced radiation) is by no means certain.
Sorry for the confusion if I led you...
Forum: Chicagoland Marine Aquarium Society (CMAS) 05/24/2007, 01:37 AM
Replies: 25
Views: 1,271
Posted By RiddleLabs
Aloha, Just to set the record straight - I...

Aloha,

Just to set the record straight - I have not tested the 400-watt version of the Solaris. I did, however, look at PFO's "250-watt" version, and this is the basis of the review in Advanced...
Forum: Lighting, Filtration & Other Equipment 02/24/2007, 06:21 PM
Replies: 118
Views: 4,844
Posted By RiddleLabs
Aloha Hahnmeister, pjf is correct - PAR 'A'...

Aloha Hahnmeister,

pjf is correct - PAR 'A' is above water; PAR 'B' is 1 meter below the surface. The x-axis scale is 0-2200 micromole/m2/second (disregard that extra '0' and that 'date' - it is...
Forum: Lighting, Filtration & Other Equipment 02/24/2007, 12:10 AM
Replies: 118
Views: 4,844
Posted By RiddleLabs
Aloha Hahnmeister, Here is the graph of...

Aloha Hahnmeister,

Here is the graph of above- and underwater PAR at 1 meter depth in a tidepool at Kahaluu, Hawaii (Big Island).

http://reefcentral.com/gallery/data/500/71948kahaluu-med.jpg
...
Forum: Lighting, Filtration & Other Equipment 02/22/2007, 11:47 PM
Replies: 118
Views: 4,844
Posted By RiddleLabs
Aloha Hahnmeister, Thanks for the photos w/...

Aloha Hahnmeister,

Thanks for the photos w/ the PAR numbers! I wish everyone would do this when it comes to lighting questions.

UV could play a major part in photoinhibiton of the corals in...
Forum: Lighting, Filtration & Other Equipment 02/22/2007, 12:32 AM
Replies: 118
Views: 4,844
Posted By RiddleLabs
Aloha Hahnmeister, Many questions... few...

Aloha Hahnmeister,

Many questions... few answers ;-).

First: Photosystems. A photosystem, in zooxanthellae, contains all the antennae pigments (chlorophyll a, chlorophyll c2, peridinin, beta...
Forum: Lighting, Filtration & Other Equipment 02/21/2007, 01:49 AM
Replies: 118
Views: 4,844
Posted By RiddleLabs
Aloha pjf, Thanks for the reference - I'm...

Aloha pjf,

Thanks for the reference - I'm familiar with it and a couple other abs curves for zoox photopigments. Kirk (2000) shows that chlorophyll a (Chl a) absorbs energy down to at least 350nm....
Forum: Lighting, Filtration & Other Equipment 02/20/2007, 12:04 AM
Replies: 118
Views: 4,844
Posted By RiddleLabs
Aloha Heinmeister, I've looked into the ATI...

Aloha Heinmeister,

I've looked into the ATI (and other) T5 lamps - there is an article in Fenner's Conscientious Aquarist website (published a year or two ago). I wouldn't be overly concerned...
Forum: Lighting, Filtration & Other Equipment 02/19/2007, 01:50 AM
Replies: 25
Views: 1,756
Posted By RiddleLabs
Aloha all, As a purchaser and owner of 2...

Aloha all,

As a purchaser and owner of 2 Solaris units, I can personally attest that these LEDs can and will promote SPS growth comparable to (if not exceeding) that seen under metal halide lamps,...
Showing results 1 to 25 of 91
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