MyQul
Chairman of the Bored
Nice. Is that the fermentation temperature or the room temperature. I'm thinking as mine are close, but not quite there that using a different yeast may be easier then setting up barrels full of water with heaters in.
If you want to go down that route, nottingham (Wilko ale yeast) yeast has large temp range, from 14C up to normal ale temps of 21C ish (I've even read it's good at high temps too but havent tried it out) and cheap too. Fermentis W34-70 which is a lager yeast (so good for low temps) is also supposed to still be very clean all the way up to 19C