I have been using rainwater off roof for all my indoor grows and always end up with thrips on my plants, am I probably introducing them myself by using liv

chlorine and fluoride is what you are removing when you leave water out over night it dissapates. Though if this is in the same room as your tent keep in mind the ambient temperture of the room will turn any water left in that room to that ambient temperture is why I always create feed and use it straigh away so i can maintain the best water temps all the way through being a dwc grower its very important for me though if you are having trouble with your tap water may i suggest a reverse ozmosis filter that will clean your water and allow you to key in the ph alot quicker along with bringing the ppm or ec down to next to nothing getting a much clearer reading through your meters alowing you to maintain optimal nutritional uptake via the roots:)

Thanks brave heart alternatively is tap water best sat overnight?

Hi mate, I can only assume you have brought the eggs in that have blown into your water supply.. If you want a great water supply for your plants, try deionised water. It is great at preventing PH fluctuations when adding nutrients. It also gives a boost for the plant. I hope this helps, good luck and happy growing

You have answered your own question my friend :)