onewarmguy
Well-Known Member
Can anybody recommend an inexpensive PH/TDS tester? I've been using the drops to PH my water but a submersible tester would be much more convenient.
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How do we know unless we do?Haven't calibrated it in 18 month and it's still only 0.2 off
Lots of ways mate. Easiest is bottled water, has the ph on the side of the bottle.How do we know unless we do?