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Advanced Discussion
Lighting/Enclosures
Enclosure ventilation and humidity
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[QUOTE="Claudiusx, post: 2021287, member: 31715"] For the most part. Correct. Right. We've made suggestions over the years in certain situations for owners to cover part of their lids for the purposes of keeping heat in. So this is where it gets really scientific, but also up for interpretation... so not scientific. On factors of importance, temperatures are more important than air flow (fresh air (fresh in the sense that stale air eventually gets removed and replaced) ). However, it's still important for any creature breathing oxygen to not just be diluting their own air supply by the exhaling of the waste products of respiration. So if we understand what the main goal of behind having ventilation or "airflow" in the enclosure is, we can try to better quantify it. In my opinion, the goal of ventilation in the tank would first and foremost be that the creature has adequate fresh air to breath. Feel free to disagree with that if you feel there is a more important reason behind ventilation in the enclosure. If we base it on that requirement, we can at least run some numbers and have a goal. And in doing so, you will see why the amount of ventilation outside of temperature control is going to be a non-issue for our purposes. Basing lung activity off of known anesthesiologist studies in reptiles (arguably going to be the best source as a measured amount of "air" gets regulated into an unconscious lizard) we know that as a general rule, lizards will use about 44ml/kg/min while under anesthesia. For the average 400g beardie, this is going to be approximately 17.6 ml/min. Since respirations while under anesthesia are lower than when awake (usually around 2 per minute when compared to 6-10 while awake) we will take the middle ground of 8, to get 70.4 ml/min while awake [SIZE=1](17.6 @ 2 breaths per minute x 4 to = 8 breathes per minute at 70.4 ml)[/SIZE] [SIZE=5]So we have an average adult consuming 70.4ml of air per minute while awake. 4224ml of air per hour. 50,688ml per waking day (respirations drop while sleeping, thus would be significantly lower amounts of consumed air). 50,688ml is just under 13.5 gallons of air. For the purposes of this discussion, if you were to be able to create an air tight seal in the average 40g breeder tank, that dragon would have enough fresh air to be able to breath for the whole day, easily. [/SIZE]No tank is going to be air tight, and some replacement of air is going to occur even with the smallest of ventilation. For purposes of replacing air, most DIY are equal or better than open tops because of convection. Even with a grossly smaller surface area of ventilation holes compared to an open screen top. So, even if you have to limit your ventilation significantly to keep your enclosures temperature proper, your dragon is going to have enough fresh air, assuming you're being a good beardie slave and feeding the poor thing at least once a day. The opening of the front doors, sliding door, screen top, etc, is going to move air. IMO, as long as you don't have obvious issues with a lack of ventilation, which only would be temperatures too high, or condensation on the walls of the enclosure, it's going to be a non-issue for 99.99% of beardie owners (much like humidity IMO) That's a lot to digest, and if you see flaws in the logic feel free to point them out. This isn't really something I've thought much on, you just kind of piqued an interest in me and got me going down the rabbit hole. -Brandon [/QUOTE]
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Lighting/Enclosures
Enclosure ventilation and humidity
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