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InvisibleDNKYD
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Registered: 09/24/04
Posts: 12,326
Heatbomb not working?
    #3779934 - 02/14/05 08:01 PM (11 years, 9 months ago)

I just built a heatbomb the other day for incubating a new batch of jars since my TiT is occupied by a few casings. I used a 20 oz. glass Sobe bottle and a 25w heater. The dial only goes up to 86, and I have it right now at the max. It's been on since last night with a towel inside the box and a blanket wrapped around the outside. The temp has only gone up to 78 degrees, and won't go over. Did I fuck up and not use a powerful enough heater?


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Invisiblepinkfloydms
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Registered: 05/27/04
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Re: Heatbomb not working? [Re: DNKYD]
    #3779946 - 02/14/05 08:04 PM (11 years, 9 months ago)

Yeah i got a 50 watt. And mine bearly gets to 87 in my tub. I made my Heatbomb with a coors light bottle.


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InvisibleHolydiver
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Re: Heatbomb not working? [Re: DNKYD]
    #3779959 - 02/14/05 08:06 PM (11 years, 9 months ago)

25 watt is powerful enough to maintain temps in 10-20 gallon aquariums. Never used a heatbomb, but I have two ideas:

1) Your heating element/thermostat is shot. (unlikely)

2) 20 oz. is a very low volume of water. Perhaps this little amount of water is heating up, and dissipating heat before it has a chance to warm up the surroundings. A 20 oz. bottle of water can't provide heat for it's surroundings if it's losing heat faster then is generated, agree?

That's why TnT's rock, you're working with a large volume of water that your inner tub is submersed in, maintains temps beautifully.

Hope this helps.


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To find a place to live between the negatives and positives.


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Invisiblepinkfloydms
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Registered: 05/27/04
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Re: Heatbomb not working? [Re: Holydiver]
    #3780148 - 02/14/05 08:49 PM (11 years, 9 months ago)

Good observation Diver!


--------------------
Muppet Said:

so yeah:
- 'sex' five times
- once with a man
- once with a cadaver
- and thrice with actual women(all of which were prostitutes)
Best story ever!

www.panicstream.com :thumbup:


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Anonymous

Post deleted by geokills [Re: pinkfloydms]
    #3782181 - 02/15/05 05:40 AM (11 years, 9 months ago)



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OfflineVertigo6911
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Re: Heatbomb not working? [Re: ]
    #3782264 - 02/15/05 07:09 AM (11 years, 9 months ago)

also plastic is a very poor heat conductor...
ure bottle might be to thick, the one in the tek looks like one of those realy thin ones...


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InvisibleHolydiver
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Re: Heatbomb not working? [Re: ]
    #3782364 - 02/15/05 08:20 AM (11 years, 9 months ago)

Quote:

RavageGardenS said:
Diver...if its dissipating the heat.....its dissipating it into the air surrounding it..which is in the tub.....thats the only place the heat can go lol...




Not if it's such a low volume of water (20 oz.?) that it doesn't even have the opportunity to heat the space. Just because you have a small container of water being heated in a small area doesn't guarantee you're going to get that controlled temp in given space. You have to understand transfer of heat to get what I'm saying here.


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Offlinechocbruce
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Registered: 11/30/04
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Re: Heatbomb not working? [Re: Holydiver]
    #3782588 - 02/15/05 10:15 AM (11 years, 9 months ago)

hrm...The heat isn't just going into the air, it is also going out of the tub, via the plastic, the greater the temperature difference, the larger the flow of heat out. also...I think that the problem with 20 oz of water is that in a week or 2 it would be almost completely evaporated out of the tub. a Foaf's is kept at 86 all the time, it is a sterilite tub (lid on) he started with a gallon of water, then about 15 days later he had to add 2 quarts to it....so the water was definately leaving the tub.

an improvement to TiT is adding an airstone to circulate the water....the evens out the temperature better than just TiT alone.


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I look for answers and present ideas, but in no way shape or form endorse, or partake in, growing, or manufacture of substances, or plants, or any specie that is illegal in your neck of the woods. I do however, tear the tags off of my mattresses. Be warned.


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Invisibleohmatic
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Re: Heatbomb not working? [Re: chocbruce]
    #3782600 - 02/15/05 10:21 AM (11 years, 9 months ago)

well once again, my lil heatbomb is cornered :wink:

guys, i can just repeat this one thing over and over and over again.
this is a SMALL SCALE INCUBATION SOLUTION.

it was meant to be sufficiant for about 6 to 9 jars, thats it.
if you want more, go TiT but for some its just better then not incubating them at all.

here some heatbomb'd jars:




i wonder when people finally will accept that it works and stop whining :wink:
peace ohm :mushroom2:


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OfflineLanceArmstrong
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Registered: 11/30/04
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Loc: FL
Last seen: 10 years, 11 months
Re: Heatbomb not working? [Re: DNKYD]
    #3783070 - 02/15/05 01:06 PM (11 years, 9 months ago)

The temperatre inside depends ONLY on insulation and temperature difference between the air inside and air outside. You have 25 W of electrical energy go into the box, it gets converted to 25 W of heat energy, and ALL that 25 W of heat energy leaves the box and heats up your room. This is equilibrium conditions, not when the heater is just heating up. Get some insulation from Lowes and wrap it around your grow chamber.


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