Spider friendly vivarium project

saminthemiddle

Arachnobaron
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Apr 27, 2008
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381
I love keeping arachnids. More than that, I love keeping arachnids in beautiful habitats with real live plants. The problem with keeping plants is that plants require a significant amount of light to keep alive which is the opposite of what most spiders need to be happy.

Traditional live plant enclosures have been limited to using plants that require very little light in order to remain healthy. By using shade tolerant house plants in the enclosure the tarantula keeper is able to maintain the plants by simply placing the enclosure in a well lit room. This, however, both limits the types of plants and types of spiders that can be kept in these enclosures: any plant that requires high light conditions or any spider that is stressed by bright light becomes unpractical.

There is a solution to this dilemma: spiders can't see red light at all. You can use all the red light that you could possibly want without stressing your pet. Furthermore, red light is one of the frequencies of light which promote photosynthesis. In other words, red light will keep your plants alive without hurting your arachnid and you can use as much of it as your plants require.

There is another perk to using artificial red light to incubate the plants, too. Photosynthesis actually works under two frequencies: red and blue. In hydroponics blue light is used to germinate seedlings and grow young plants wile red light is used to maintain existing vegetation and produce fruit. If my hypothesis is correct, using only red light will impart the additional benefit of slowing or even stunting live plant growth while still maintaining plant health; this means less tank maintenance for the keeper.

To test the merits of this approach I have built a test vivarium containing two succulents which need high light conditions. The spider is a Zoropsis spinimana which is a simi-arboreal, non-burrowing, true spider. Both the plants and the spider are very hardy so a small mistake with the vivarium shouldn't spell instant disaster.

The lighting will consist of a panel of red LED lights. The exact wattage of these lights I have yet to settle on but it should be in the range of 1.5W to 3W. I have chosen LED lights because, while they are expensive to obtain at first, they are cheap to operate, even off of batteries. LED lights are also extremely efficient and therefore heat generation, and thus desiccation risk should will be kept at a minimum.

In order to insure that the plant health isn't due to any household or sunlight contaminating the experiment I will be keeping the vivarium in a darkened cabinet with only the grow lights and one or two green LEDs on a timer to keep the spider's circadian rhythm balanced.

Success in the artificial light vivarium experiment will be declared if, after two months, both plants are alive and the spider has been spotted regularly in an exposed location while the lamps are on full intensity.

Throughout the experiment I will be posting updates on how well the plants and the animal are doing and any modifications I have made to the setup.
 

saminthemiddle

Arachnobaron
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Apr 27, 2008
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381
I'll post some pictures of the experiment as soon as the grow lights are finished and as soon as I can get my camera to work right :wall:.
 

Snakeguybuffalo

Arachnosquire
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Joined
Jan 14, 2008
Messages
89
it sounds interesting. I was always under the impression that if you use white light and enough plants to create a lot of shade underneath, then both the spider and the plants would be happy. but this definitely sounds interesting. Keep us posted.
 

saminthemiddle

Arachnobaron
Old Timer
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Apr 27, 2008
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381
Will do that, Snakeguybuffalo.

Anyway, changes:

I'm going to be using a red party bulb as I'm just about to drop over a hundred dollars on some new slings and thus don't have enough money for what will probably be a 20-30 dollar LED array. I'm going to place the bulbs on the other end of the enclosure to lower the amount of heat transfered. On the other hand I shouldn't count my chickens before they hatch, I know of a good surplus warehouse that I might be able to get a good deal at. Also, it's going to take several days to solder together the panel and the party bulb will be ready sooner. So, at least for the first few days I'll be using the incandescent.

Everything is still very much alive. Both plants are still nice and green. The spider is being an ungrateful pig and ignoring all those nice plants I put in there for her climbing pleasure and is instead glued to the container's side!
 

BoomBoom

Arachnosquire
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May 26, 2008
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55
Sounds like a nice little experiment! I didn't know Spiders can't see the color red. I thought inverts depend on thermal vission and/or movement. Is that just for certain species or just a general statement for all arachnos? If I may make a suggestion I would say when you go to use your red LED's, Look for an array with "True" red LED's on them. All leds are not manufactured the same. They may say red but they really mean a little green, a little bit of yellow, and alot of red. Same thing with Green LED's. The way to tell if they are true red is point the LED on the side of a cd. Your should just see red. If its a cheap brand your will see yellow orange and red. Alot of older electronics contain a "green" power led indicator light when truthfully it is not really green it's green, cyan, yellow, and maybe some red. They appear more of a Lime type of green. In any case I cant wait to hear your results. :clap:
 

saminthemiddle

Arachnobaron
Old Timer
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Apr 27, 2008
Messages
381
Oh, don't worry Boom Boom. I'm buying actual red LEDs which are truthfully cheaper than the "red" LEDs.

What you're warning me about are white LEDs that have filters on them. I don't know why they would do that because white LEDs are quite a bit more expensive than true red LEDs. Probably what's going on is they have a single array and put filters on them for all kinds of colors for cheapness though mass production.
 
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