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Thread: TDS Pen
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04-02-2019, 06:18 PM #1
TDS Pen
Hi all,
looking for a good quality TDS pen,any recommendations would be great
cheers Jay
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06-02-2019, 10:50 AM #2
Osmotics uk do a decent TDS pen, I have used them for all things water and RO for a good few years and always found them very good,,
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06-02-2019, 06:33 PM #3
The Daily pond temp thread
Still at around 17C, know what you mean about getting the covers off though :D it will be really...