Jpappy's 10 gallon CP setup

They look great, Pappy! Looks like they're all perking up nicely!
 
I'm not seeing the fungus... where is it again? Is there something in the pot with the fly trap?
 
Now I see it. I bet it'll be fine with some nice new substrate. Is there another plant in that pot or are the leaves on the left new traps forming?
 
That sucks about the fungus but at least the plants are looking good.
 
Weird thing is, the top is almost completely open save the two clamp lights in the back corners, and the humidity has actually increased since removing the third light. I have my ceiling fan on pretty much 24/7 so I thought the circulation would increase.
 
Weird thing is, the top is almost completely open save the two clamp lights in the back corners, and the humidity has actually increased since removing the third light. I have my ceiling fan on pretty much 24/7 so I thought the circulation would increase.
to be expected, really. check out a psychrometric chart. use the straight edge of a piece of paper to get your estimated values.

we all know air expands as it heats. think of it in terms of a sponge. the bigger sponge (expanded, hotter air) holds more water.

relative humidity: percentage of water air is capable of holding relative to its temperature.
specific humidity: the amount of water (in grains) held by air. this is measured in grains per pound (gpp).
dew point: the temperature at which a specific volume of air with a known specific humidity reaches 100% saturation (relative humidity) and begins to precipitate moisture onto solid objects (dew).

this is why a warm tank in a cool room usually has dew on the glass. the glass tends to take the cooler temp of the room and the warm humid air passing over it contracts as it cools leaving less room for moisture and thus deposits it onto the cooler surface that's causing it to contract.

so, when you remove a bulb from your setup you're literally squeezing the sponge inside the box.

i'm literally sitting right in front of this right now...
calculator.jpg

so i'll give you an example

say you're sitting at 80* F and 60% RH (relative humidity) and temp isn't important yet you need a minimum of 75% rh for whatever reason. you set your dial to 80 and 60 respectively and tune in till you get your 75%. that should give you the temp at which you get your desired results. in this case it would be approximately 73*F which would give you your maximum desirable temp under your circumstances. cross referencing you also get ~92 g.p.p. and a dew point of ~64*F. consequently 64* should also give you 100% RH in this example as that is the dew point. so, if the room that tank is sitting in is 64* or less there most certainly be moisture on your glass.

i'm sure you guys have come across fans in your endeavors. they can be very useful. a couple pc fans in your enclosures can accomplish all kinds of things. evaporative cooling, raising humidity by way of friction, drying a particular species or substrate, air circulation, etc.,etc.. they're easy to wire up too. all you need is a dc converter/power supply of 5-12 volts depending on the speed you want your fan blowing, something to splice the wires with, something to connect and insulate them and an old pc fan. with your open top you most likely couldn't raise humidity much since it'd escape but you could cool the enclosure by way of evaporation if necessary... just aim the fan at the water.

if you guys already know any of this or if it's not helpful you can tell me i'm an idiot... it's obee kaybee.
 
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