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Last seen: Sep 1, 2026
@old_scientist You will probably find that most of it has settled out in the rads or the volumiser. Anywhere where there isn’t laminar flow. I had ...
That’s not biofilm. Looks like a very fine particulate rust, but fine enough that I doubt it will do too much harm. If the cleaner doesn’t shift it yo...
@toodles must be a PW2 thing, I understand the 2 versions use different battery chemistry. Im semi intentionally abusing my battery, it gets 3 full cy...
@toodles weird. It’s only started doing this very recently?
@toodles never seen that before, not on mine.
@old_scientist That sounds like text book biofilm (I used to work on very high purity water systems for IV use and experienced it several times). I...
@toodles Here’s mine from yesterday. We are 5 person household at the moment, the big peak is the DHW cycle.
@old_scientist Thats good, it would have explained the colour at least. With the glycol, possible organic acids complicate the potential causes o...
@old_scientist To exclude it being a biofilm of sulphate reducing bacteria, if you sniff the brownish water, does it smell sulphurous or eggy?
@toodles sorry it’s not worked out for you, not much of summer left anyway. It seems you have all your heavy loads in the evening whereas I schedule...
Don’t forget, it’s not the headspace gases that are the issue. It’s the dissolved oxygen in the heating fluid that’s key. Either there wasn’t any/insu...
The colour suggests ferric oxide, ie rust. Or something of that colour that has been added to the system, but I think that unlikely. My sludge is bl...
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