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Old 01-13-2013, 10:35 PM   #1
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Default DIY - Fermwrap help

Has anyone bought or made a fermwrap using the heat tape similar to below?

http://www.reptilebasics.com/12-heat-tape

Any feedback or suggestions?

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Old 01-13-2013, 11:13 PM   #2
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I ordered from that site. Easiest dyi project I've done. I use mine on Better Bottles. I measured the circumference and order 75% of that length. I place my temp probe centered in the gap of the heat strip.

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Old 01-13-2013, 11:31 PM   #3
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I ordered from that site. Easiest dyi project I've done. I use mine on Better Bottles. I measured the circumference and order 75% of that length. I place my temp probe centered in the gap of the heat strip.
How well does it controller with the temp probe stuck to the outside? Which controller did you choose?
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Old 01-14-2013, 12:54 PM   #4
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Usually, I use the controller from the "Cheap eBay Temp Controller" thread. I believe it is an aquarium temp controller. I have also used my dyi Arduino temp controller.

I have held a five gallon Better Bottle at 100F with the eBay Temp Controller for the lactic fermentation of a Berliner. I set the range of the controller at 1F. I used 2in blue painters tape to secure the corners of the temp wrap to the Better Bottle. I taped the temp probe under a piece of reflective bubble insulation and then taped the insulation to the side of the Better Bottle. I put a sweat shirt over the entire thing. I think it ran at about 60% duty cycle.

I wish I had pictures. Let me know if you have more questions.

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Old 01-14-2013, 01:50 PM   #5
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I am using it on my first batch in my new ferm chamber right now... I have a new ferm chamber (chest freezer) build linked in my sig. I have not updated yet to reflect my brew this weekend though... will up date soon.
Basically, I control the chest with one controller and individually control each carboy with it's own thermowell'd (is that a word) 15 gallon fermenter with 12" wide heat tape spiraled up the side. I am laggering a batch in the chest right now and have a Dus Alt in fermentation at 55*F. It is holding beautifully at target temp.

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Old 01-14-2013, 01:59 PM   #6
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Yep. Bought the tape from reptile basics, used some spare extension cords I had; whipped them up according to instructions. Work great.

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Old 10-20-2013, 05:30 PM   #7
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I have held a five gallon Better Bottle at 100F with the eBay Temp Controller
You held it at 100F using the flexwatt and an STC-1000? You wrapped the flexwatt around the fermenter directly, right? Do you think it will work the same if it's just lining the inside of the chamber of a small mini-fridge? I'm trying to do the same thing (sour worting) for some brews. I have it installed in my ferm chamber but it doesn't seem to be heating much/at all...
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Old 10-20-2013, 07:14 PM   #8
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This looks awesome. What all does it take to make it a working product?

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Old 10-20-2013, 09:33 PM   #9
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I didn't secure the wires enough an when I replaced the wire cover on the STC-1000 I knocked one loose. It's working fine now. Brought a water bottle up to 99F before I turned it off. I bet it will go higher with time and less of me opening the door.

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Old 10-21-2013, 09:27 PM   #10
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USMCPayne, sounds like you have your system working. I love the flexwatt. I use it for lactic fermentations at 100F, saisons in the 80s, and heating up wort if I chilled it too far below pitching temp.

I always wrap a sweat shirt around the fermentor (either a corny or better bottle). I leave the fermentor sitting on floor.

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