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OfflineDubiousDuo
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Heater w/o pump in TinT??
    #3376974 - 11/18/04 12:33 AM (12 years, 4 months ago)

IS it necessary to have something circulating the water that is used to keep TiT at a certain temp. I will get a heater, but is a pump necessary, the heat will diffuse naturally right?


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Offlinedaimyo
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Re: Heater w/o pump in TinT?? [Re: DubiousDuo]
    #3377011 - 11/18/04 12:43 AM (12 years, 4 months ago)

It's not at all necessary. Just a nice addition when the funding is available.


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OfflineDubiousDuo
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Re: Heater w/o pump in TinT?? [Re: daimyo]
    #3377037 - 11/18/04 12:49 AM (12 years, 4 months ago)

ok, thats what i was hoping, not a matter of funding necessarily, i just want something absolutely quiet. if using something that pumps air in im sure it will be loud from the bubbling alone. are there pumps that circulate water without introducing air, so as to be silent? that would be nice :P


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Offlinerobbster
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Re: Heater w/o pump in TinT?? [Re: DubiousDuo]
    #3377068 - 11/18/04 12:57 AM (12 years, 4 months ago)

airpumps are fairly quite. My computer runs louder than my 60 gallon airpump does. There is a little bubbling/gurgling noise when the bottom jug is filled. Just air escaping from the sides (so i assume...)


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OfflineDubiousDuo
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Re: Heater w/o pump in TinT?? [Re: robbster]
    #3377084 - 11/18/04 01:02 AM (12 years, 4 months ago)

alrighty, sounds good. a dual outlet pump could be used to pump both water circulation as well as air circ for inside tub/turned into PMP one might guess. of course the air pump would have to be strong to pump that much. muffling of sound could be accomplished too probably. could TiT be turned into PMP after incubation? maybe new post? i dunno


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Offlinepshawny
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Re: Heater w/o pump in TinT?? [Re: DubiousDuo]
    #3377119 - 11/18/04 01:13 AM (12 years, 4 months ago)

Yeah, you could turn it into a PMP. Just add some perlite or geolite/water, an air pump, and a couple air wands. Turn the temp down to 76 and your good to go.


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Offlinerobbster
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Re: Heater w/o pump in TinT?? [Re: DubiousDuo]
    #3377127 - 11/18/04 01:14 AM (12 years, 4 months ago)

well, i sure hope it can, cause thats my plan.

Im going to be keeping the TiT setup with my pmp the only difference is im gonna have 2 10" airstones in the PMP and 1 10" airstone in the TiT.

Btw, the pump is about 2" x 4" so its easy to conceal.


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"This is the trip, this is the best part."
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InvisibleMagashM
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Re: Heater w/o pump in TinT?? [Re: DubiousDuo]
    #3377157 - 11/18/04 01:27 AM (12 years, 4 months ago)

Hey just so you know a tub in tub never uses a air pump. A water pump is the pump used. You want to move the water and a air pump does not do a good job. With a water pump moving the water you shouldn't hear a thing.

but a pump isn't needed. I just like to heat the jars from all sides rather then the bottom alone.


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OfflineDubiousDuo
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Re: Heater w/o pump in TinT?? [Re: Magash]
    #3382015 - 11/19/04 12:05 AM (12 years, 4 months ago)

Thanks magash, i got an air pump today :frown: lol oh well, would it be better to use one of the outlets as a water circulator than not? meaning could it do anything negative? i might as well use one of the outlets to circulate/shake up the water. im thinking of useing the other one for PMP, unless i go bulk.


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OfflineFerment
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Re: Heater w/o pump in TinT?? [Re: Magash]
    #3382576 - 11/19/04 03:02 AM (12 years, 4 months ago)

Quote:

Magash said:
Hey just so you know a tub in tub never uses a air pump. A water pump is the pump used. You want to move the water and a air pump does not do a good job. With a water pump moving the water you shouldn't hear a thing.

but a pump isn't needed. I just like to heat the jars from all sides rather then the bottom alone.




Wouldn't heated water rise to the top naturally, surrounding the TiT? Hot water is less dense than cold water, so...


Edited by Ferment (11/19/04 03:05 AM)


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Offlinecall_me_kido
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Re: Heater w/o pump in TinT?? [Re: Ferment]
    #3383397 - 11/19/04 11:11 AM (12 years, 4 months ago)

Unless you hold the bin down and fill it to the brim with water, the heater will only radiate heat in the general area. The heat will rise, but dont forget the heater turns off when the set temperature is acheived. Often the water around the heater will reach the correct temp while the water on the top sides will radiate it and cool, while the water directly exposed to the heat source stays the same. Magash is using the pump as an aid to ensure all the water stays at the correct temp, I do it also and have noticed a more even distribution of heat. To each his own.

Kido


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"If we knew what it was we were doing, it would not be called research, would it?"
- Albert Einstein (1875-1955)

"A is A" -Aristotle


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InvisiblePeterthinks
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Re: Heater w/o pump in TinT?? [Re: call_me_kido]
    #3385680 - 11/19/04 07:47 PM (12 years, 4 months ago)

Convection and conduction are enough to circulate the water.there won't be more than 1 degree of temperature difference between the top and bottom of the water between the tubs.
just like a lava lamp...it heats up, cools and drops down.
Pumps are overkill in my opinion.
My cultures just don't care either way...in the incubator on the fridge or on the desk they still spread.
The only difference is it may take a day or two longer in my sock drawer than it would take on top of the fridge.
As long as the dish is clean and all that is in there is what you want to grow the only thing affected is the speed.


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InvisibleMagashM
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Re: Heater w/o pump in TinT?? [Re: Peterthinks]
    #3387441 - 11/20/04 03:34 AM (12 years, 4 months ago)

>Convection and conduction are enough to circulate the water.there won't be more than 1 degree of temperature difference between the top and bottom of the water between the tubs.

Nope, 8 years on the job with fucked up pumps and water cooling and heating systems plus countless others here who have done tub in tubs both ways know this isn't true.

The Martha, PMP, and some mods to the incubators and those ideas were all stolen from this book.



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All creatures tremble when faced with violence. All creatures fear death, all love life. If we can only see ourselves in others, then how could we possibly hurt another creature?


:growingweed: Join us at the Growery! :growingweed:


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OfflineAnonymousNewbie
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Re: Heater w/o pump in TinT?? [Re: Magash]
    #3387495 - 11/20/04 03:50 AM (12 years, 4 months ago)

My buddy gets pretty uniform temps all over the surface of his T-in-T with no pump. However I don't know how big these incubators you guys have, with a large enough surface area and shallow water, i think the pump would make a huge difference.


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