solved my problem of difference in head in the one brew.
as a few suggested it was the brew vat plus my tank water having bacteria in minute amunts.
does anyone have any idea whether this bottled water would be suitable as they are the only ones who deliver to my little town. they assure me its ok.
many thanks:
We are committed to providing our clients with the finest naturally sourced spring water available in Queensland. Freshest Spring Water is bottled at the source and uses a series of filtration and sterilisation methods to ensure that the water maintains its natural mineral content. This is in contrast with many of our competitors, who instead use reverse osmosis on municipality water, which removes many of the essential minerals before bottling. Here at Freshest Spring Water, we are passionate about providing the healthiest water possible. Our spring water contains trace elements of minerals such as calcium and magnesium, which are vital for overall health and wellbeing. It also has a slightly alkaline pH, helping to neutralise acidity in the body and reduce the amount of damage caused by free radicals. Our mineral-rich water helps to maintain strong teeth and bones and is a natural way to look after your body.