My brew has lost a lot of its sweetness

[Charles1968]

Ashbeck is pretty useless for brewing, it doesn't contain anything.

That's a good thing if you're trying to reduce the level of unwanted minerals like bicarbonate. If you use a water calculator that allows for mixing water sources, e.g. the ones on bru'n'water and brewersfriend, you can mix ashbeck (or Asda Eden Falls) with your tap water. It's just another tool in the effort to get the water on target and means you don't need as much CRS and will end up with less sulphate and chloride, which can overshoot if you aren't careful. Ashbeck and Eden Falls are both set up already in the Brewersfriend water profile database. London water too.

[andyisavinit]

Testing the ph of starsan??

Didn't realise that was an issue. What should that be then? And why, what does that do? Stop it going slimy? Or is that caused by alkalinity? Is ashbeck good for starsan use?

[Charles1968]

Is ashbeck good for starsan use?

Yes. You need pH under 3.5 for starsan solution to work.