Forum: Lighting
04-20-2013, 08:55 AM
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Replies: 19
Views: 1,902
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Forum: Lighting
12-14-2011, 08:02 PM
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Replies: 19
Views: 1,902
The specsheets is all I use. LED:s are a bit...
The specsheets is all I use. LED:s are a bit tiresome to add since it involves alot of reading and decide what current is interesting for hobbyists. Some like to invest less in diodes and overdrive...
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Forum: Lighting
12-14-2011, 07:24 AM
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Replies: 19
Views: 1,902
It the total PAR on the bottom of the tank for...
It the total PAR on the bottom of the tank for the selected amount of wattage/size of aquarium/reflector efficiency etc.
That means that you can either reach the wanted wattage by using less but...
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Forum: Lighting
12-14-2011, 06:40 AM
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Replies: 19
Views: 1,902
Ok. I understand the confusion.
It's the...
Ok. I understand the confusion.
It's the same as when comparing the miles per gallon between a BMW M3 and a Toyota Prius running the same (high) speed around a track. To keep the speed with the...
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Forum: Lighting
12-13-2011, 09:58 AM
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Replies: 19
Views: 1,902
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Forum: Lighting
12-13-2011, 06:57 AM
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Replies: 19
Views: 1,902
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Forum: Lighting
05-16-2011, 11:27 AM
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Replies: 19
Views: 1,902
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Forum: Lighting
05-12-2011, 06:46 PM
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Replies: 19
Views: 1,902
That is interesting and makes a point that no...
That is interesting and makes a point that no species will have one "definite" action spectrum. They can acclimatize to more "exotic blends" of light, perhaps with more yellow and green.
Does this...
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Forum: Lighting
05-12-2011, 06:14 PM
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Replies: 19
Views: 1,902
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Forum: Lighting
05-11-2011, 08:28 PM
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Replies: 19
Views: 1,902
3D PAR/PUR-calculator
Hi folks, long time no see.
I'm making progress with my 3D light calculator. It will be a Java-based calculator that can be launched from a browser.
The current state is that the really complex...
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Forum: The Lounge & Introductions
11-29-2010, 10:33 AM
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Replies: 0
Views: 203
Help identifying an aquascape
The aquascape-picture used in this rendering looked interesting. Does anyone knows of the aquascaper or where the aquascape comes from?
http://farm6.static.flickr.com/5245/5215129311_0f89ecf511_o.jpg
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Forum: Algae
06-07-2010, 01:08 PM
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Replies: 37
Views: 2,573
This is a seriously important concept. ...
This is a seriously important concept.
http://en.wikipedia.org/wiki/Correlation_does_not_imply_causation
http://fishweb.ifas.ufl.edu/Faculty%20Pubs/CanfieldPubs/LimitFact.pdf
(I think he is...
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Forum: Fertilizers and Water Parameters
03-29-2010, 12:15 PM
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Replies: 11
Views: 866
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Forum: Lighting
02-11-2010, 05:34 PM
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Replies: 6
Views: 634
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Forum: Lighting
02-10-2010, 12:16 PM
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Replies: 6
Views: 634
Instead of borrowing or purchasing..
http://www.defblog.se/LightCalculator/
I have upgraded the calculator to simulate an Apogee PAR-meter.
All the different measures you might want to know should be there except watt/litres.
...
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Forum: Lighting
07-25-2009, 05:40 PM
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Replies: 22
Views: 995
Glad you like the movies and the mounting legs....
Glad you like the movies and the mounting legs. It's DIY made out of chromed copper tubing for drinking water. Three tubes where I put a very long threaded rod inside the middle one and just screwed...
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Forum: Lighting
07-25-2009, 02:44 PM
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Replies: 22
Views: 995
Dust algae and PAR
New video, now with dust algae and without. I also flip up one reflector while measuring:
http://www.youtube.com/watch?v=Xse1ZJV6MVc
Notice how much clean glass helps reflecting down light....
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Forum: Lighting
07-22-2009, 05:09 PM
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Replies: 19
Views: 4,444
The only plants I've had been trouble growing...
The only plants I've had been trouble growing because of light limitations is HC and P. helferi so to me the big question have always been what kind of intensity is on the substrate level.
I see...
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Forum: Lighting
07-22-2009, 10:48 AM
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Replies: 22
Views: 995
Then we share the same goal. =)
+1
...
Then we share the same goal. =)
+1
This is what I believe also. I was surprised that T5NO-bulbs often has higher PUR-effiency than the saeme T5HO, wasting less energy and getting more...
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Forum: Lighting
07-22-2009, 10:37 AM
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Replies: 19
Views: 4,444
Great, that is what I want to do. I'm fairly...
Great, that is what I want to do. I'm fairly uninterested in exactly how the light varies at surface level and more of an average intensity that you can use compare with others averages.
Getting...
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Forum: Lighting
07-21-2009, 09:56 PM
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Replies: 22
Views: 995
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Forum: Lighting
07-21-2009, 05:51 PM
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Replies: 22
Views: 995
I guess that is pretty much exactly what my...
I guess that is pretty much exactly what my seagull shaped Aquamedic reflectors do. All they need to do is getting down as much of the omni directional light down on the surface, then the glass+water...
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Forum: Lighting
07-21-2009, 05:36 PM
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Replies: 19
Views: 4,444
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Forum: Lighting
07-21-2009, 08:41 AM
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Replies: 22
Views: 995
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Forum: Lighting
07-21-2009, 08:35 AM
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Replies: 19
Views: 4,444
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