Does anyone know if there's anything to be wary of with using rainwater from concrete tanks for brewing (apart from the obvious like clean gutters and tank)?
Thanks for that, chiller. I was almost going to just PM you instead of starting this thread as I'd looked over a few old threads and noticed that you seemed like a bit of a guru on the subject.
Im on tank water at home. Currently coming out of an old concrete tank. Mine ferments away quite happily when i have a decent yeast in there with no other additives to the water whatsoever.