Guy Posted July 30, 2017 Report Share Posted July 30, 2017 Using my super cheapy TDS meter has shown me the rainwater in my 250l water butt has a TDS reading of just under 70. However, the rainwater which collects in the trays outdoors which have plants in reads 10. Quite a difference! This tells me my roof is really mucky. Or the water butt is leaking solids from the plastic. Or perhaps both? Thoughts would be welcome. And is water with a TDS reading of 70 OK for CPs? I've read it should be less than 100, but I've also read it should be less than 50. In a few weeks we're getting a shed put up. This will give me about 15ft of guttering to collect rain water from. Can it be collected as soon as the shed's up, or would it be best to let it go through a few hours of rain first to clean anything off the roofing felt? Thanks in advance for any comments and advice. Guy Quote Link to comment Share on other sites More sharing options...
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