For example, it will turn green to indicate it's ready, but then when I put in my nail it will turn back red.
This is normal, when you put the nail in, it will soak up a lot of heat from the unit, so much that it will detect it, go red and start heating up again. Putting the nail in is the easiest way to steal enough heat from the unit to make it go red.
Or if we're doing flower, it will turn red for some reason when we pick it up.
This probably needs some context, all I could assume now is that it went green recently and overshoot into red.
The unit can heats up very fast by going overpowered when heating up and then it predicts that it should shut the heater down 20 seconds before it actualy hits the temp. Sometimes it predicts a little off and the temp will overshoot a little.
One way to easily reproduce this is to let the unit heat up and before it get to the temp, dial down until you find the green. You would expect it to stay green, but the unit wasn't expecting you tu turn the dial down and it's too late for it to stop heating. You would see it go to red again and then back.
Or if we hit, it will also flicker.
It is possible to bring the temp down to red with a VERY VERY hard and long hit. It's much harder to make it red this way, because air doesn't have much heat capacity and conductivity like the nail does. But it's possible.
I was under the impression the hydrafoot could house the vxnails. (I've seen it done) - was there a change made to prevent this from happening? I can't fit my quartz in there.
Every hydrafoot is different. Soem people found out than their hydrafoot happened to be able to hold them, but it never was a standard feature.
Some hydrafeet are not even hollow. Like the first one that came with my hydratube. My second one can hold a nail.
I'm worried about the Vape Exhale logo from fading on the base of my hydra-tube. Is this something I'm going to have to be conscious about not touching if I don't want it to fade?
I've got a hydrabase with the vapexhale logo and it's still complete. Doesn't seem to be fading at all. I even accidentaly scratched it a few times with my fingernails and it did nothing bad to it.
I'm also worried about leaving it on too long. How long can I have it on before I should let it cool down?
The unit should have an automatic shut-off after an hour or two. So you shouldn't worry about forgetting turning it off. And when it's not inverted, it can sit there heated up all day. But it would probably still benefit from getting turned off and cooling down at least two times a day. Maybe more if it's got the heat shield on. With than on, the bottom part with circutry can get hot after few hours.