sterilising rainwater

  1. L

    Using rainwater - advice requested!

    My first grow, and I'm using soil. I want to use rainwater, but I've just cleaned out my guttering, and flushed away most of the debris in there. Trouble is, itll never be 100% clean. For best results, I imagine it would be best to have it sterilised in some way before it reaches the plants...
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