Fermentation with Brewbelt
Fermentation with Brewbelt
Hi All,
Now doing another brew and previously I've always been disappointed with my homebrew but I think this has been because I have always kept the brew at about 18degrees C, so this time I used a brewbelt.
After initially fermenting well, Im now concerned its been too hot, the little thermometer on the side of the fermenter says 28-30 degrees. Will the brew be ruined? I thought a nice warm temperature would be better as friends have used their airing cupboards before and had success.
4 days in SG is 1.015, brewbelt now turned off.
Any ideas?
Now doing another brew and previously I've always been disappointed with my homebrew but I think this has been because I have always kept the brew at about 18degrees C, so this time I used a brewbelt.
After initially fermenting well, Im now concerned its been too hot, the little thermometer on the side of the fermenter says 28-30 degrees. Will the brew be ruined? I thought a nice warm temperature would be better as friends have used their airing cupboards before and had success.
4 days in SG is 1.015, brewbelt now turned off.
Any ideas?
Re: Fermentation with Brewbelt
28 is tooooooooooooooooooooooooo high, its not too cold out, so i only put the belt on at night
18 degrees is fine for a brew, but probably drops at night
18 degrees is fine for a brew, but probably drops at night
Re: Fermentation with Brewbelt
Ouch, thats too high mate. Possibly killed off your yeast! I use a belt with a cheap timer so its not on all the time. Also keeping it higher up the FV is better
Re: Fermentation with Brewbelt
Quick thought... is your thermometer above your heat belt? if so, remember heat rises, so I'd turn off the heat belt for half an hour and see what the reading is then. If it drops to the low 20's very quickly then it may be convected heat from the belt giving the high readings.
Edit: Just saw you have already turned off your heat belt... D'oh!
Edit: Just saw you have already turned off your heat belt... D'oh!

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21.5L Coopers Stout + Treacle OG 1054 (Start 6/11/2015)
21L Coopers English Bitter + Hops OG 1047 (Start 6/11/2015)
20L Coopers APA OG 1050 FG 1014 (Start 26/10/2014, PB'd 30/11/2014 Dry hopped 100g Cascade on 18/11/2014)
20L Coopers Stout OG 1048 FG 1016 (Start 30/11/2014, PB'd 17/12/2014)
20L Coopers Stout OG 1048 (PB'd 17/12/2013)
20L Coopers Lager OG 1047 (Start 03/12/2013, PB'd 04/08/2014!)
21.5L Coopers Stout + Treacle OG 1054 (Start 6/11/2015)
21L Coopers English Bitter + Hops OG 1047 (Start 6/11/2015)
20L Coopers APA OG 1050 FG 1014 (Start 26/10/2014, PB'd 30/11/2014 Dry hopped 100g Cascade on 18/11/2014)
20L Coopers Stout OG 1048 FG 1016 (Start 30/11/2014, PB'd 17/12/2014)
20L Coopers Stout OG 1048 (PB'd 17/12/2013)
20L Coopers Lager OG 1047 (Start 03/12/2013, PB'd 04/08/2014!)
Re: Fermentation with Brewbelt
"Ouch, thats too high mate. Possibly killed off your yeast!"
Well Coopers say their brews should be brewed in the range of 18 - 32C, but they recommend 21 - 27C (this is taken directly from the Coopers kit instructions).
I brewed a stout at around 26C a few weeks back (the ambient temp in the kitchen here back then) and it tastes fine.
Well Coopers say their brews should be brewed in the range of 18 - 32C, but they recommend 21 - 27C (this is taken directly from the Coopers kit instructions).
I brewed a stout at around 26C a few weeks back (the ambient temp in the kitchen here back then) and it tastes fine.
Re: Fermentation with Brewbelt
Yeh the LCD thermometer was above the heater so this may have falsified the reading bu a couple of degrees but the brew felt warm, I have more yeast, shall I hydrate some and add?
Ambient temperature was probably about 20degrees and the brewbelt was definately hot!
Any advantage or disadvantage to moving it a bit to to get the settled bits mixed up a bit?
Ambient temperature was probably about 20degrees and the brewbelt was definately hot!
Any advantage or disadvantage to moving it a bit to to get the settled bits mixed up a bit?
Re: Fermentation with Brewbelt
Thanks, hopefully it may be ok!Mo06 wrote:"Ouch, thats too high mate. Possibly killed off your yeast!"
Well Coopers say their brews should be brewed in the range of 18 - 32C, but they recommend 21 - 27C (this is taken directly from the Coopers kit instructions).
I brewed a stout at around 26C a few weeks back (the ambient temp in the kitchen here back then) and it tastes fine.
Is there any way to get an idea if a beer will be ruined by tasting it before bottling it, or will it always taste like sh*ite before secondary fermentation?
Re: Fermentation with Brewbelt
Georgy wrote:Mo06 wrote:Thanks, hopefully it may be ok!
Is there any way to get an idea if a beer will be ruined by tasting it before bottling it, or will it always taste like sh*ite before secondary fermentation?
Your best bottling/kegging and waiting. It'll be drinkable what ever the outcome mate

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Re: Fermentation with Brewbelt
Georgy; Cut ye losses and pain, mate.
Chuck the f**king thing away and buy a German made, 50 Watt fish tank heater with externally visible / settable thermostat. Around £15.00 on Amazon UK.
In fact; About the same price as One ruined kit ..... Why risk f**king another?
Chuck the f**king thing away and buy a German made, 50 Watt fish tank heater with externally visible / settable thermostat. Around £15.00 on Amazon UK.
In fact; About the same price as One ruined kit ..... Why risk f**king another?
Re: Fermentation with Brewbelt
Brewbelts are great,
it must be borne in mind that they heat at a temperature of °C ambient "plus". The plus side of things can be varied, as someone mentioned earlier, by positioning the belt at various heights around the FV.
I had three "settings" for my belt, round the bottom was ambient plus 6°, About a third up was ambient plus 4°, a third from the top was ambient plus 2°.
I eventually improved my system by fitting an STC100 temperature controller to the belt which can be pre set to maintain any temperature within a degree or so.
I have recently made more improvements to my system whereby the belt sits in an insulated cupboard which can accommodate up to four vessels and can maintain the temperature. The method seems energy efficient, the 25watt belt only switches on about 25% of the time.
Of course it is also a very hygienic method as nothing is in the FV except the beer.


it must be borne in mind that they heat at a temperature of °C ambient "plus". The plus side of things can be varied, as someone mentioned earlier, by positioning the belt at various heights around the FV.
I had three "settings" for my belt, round the bottom was ambient plus 6°, About a third up was ambient plus 4°, a third from the top was ambient plus 2°.
I eventually improved my system by fitting an STC100 temperature controller to the belt which can be pre set to maintain any temperature within a degree or so.
I have recently made more improvements to my system whereby the belt sits in an insulated cupboard which can accommodate up to four vessels and can maintain the temperature. The method seems energy efficient, the 25watt belt only switches on about 25% of the time.
Of course it is also a very hygienic method as nothing is in the FV except the beer.

