Stuck Fermentaions x2!

[Muddydisco]

I'm getting the hang of this brewing lark but Both of my kits have stuck at 1020 or above. the first was the kit supplied yeast and used by a radiator wrapped in a duvet. To cure I dumped aload of primary yeast out of a bottled beer and that did the trick! The second is a kit but with s04 yeast instead of the one supplied and this time it's in a temp controlled cupboard at 19.5 degrees well within Safales temps but stuck at 1020 again for over 3 days. Which is only 50% attenuation
I'm thinking airation? not enough and thats slowing it down to nothing?
Any clues as would like to just leave them alone once in FV!!!!!

 

[tubby_shaw]

I would think that your analysis is probably correct md :thumb:
Aeration is often neglected when putting a kit together It doesn't tend to happen with grain and extract brewing as the transfer from the boiler to the FV is usually sufficient.
At this stage though it's not a good idea to aerate and I can only suggest that you add another actively fermenting yeast :)