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Questions Water quality for cannabis

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greentomato
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Putting this is the soil section because I know this question can have so many different answers across all the growing mediums, this is specifically for soil growers.

I’ve been having a look into my tap water, I live in a hard water area ppm of calcium in the water around 277, high ph as well, around 7.8

So it’s not terrible quality (I don’t think) but also not great for what I’ve read is good for plants.

Will using this water, even when adjusting ph have an adverse affect on my plants? Or rather would I have healthier plants using filtered water? 

Thanks

 
Posted : October 21, 2021 2:28 pm
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Billy420Bonds
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Q. Is using bottled water a possibility ? 

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Posted : October 21, 2021 2:33 pm
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greentomato
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@billy420bonds everything is a possibility. Is it necessary with the current water source I have?

 
Posted : October 21, 2021 3:03 pm
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Macky
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@greentomato It shouldnt cause too much bother mate. If you want to reduce it a bit, use half RO water, or bottled water to reduce the BG EC. Then you still have some of those trace elements from the water, they are just diluted. 

What is the background EC of your water? 

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Posted : October 21, 2021 3:03 pm
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monkeydo
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My tap water is also less than desirable. Out of the tap this morning it was EC .565 and ph 7.6. I used just this tap water on my first run and I got to harvest. At the time I knew almost nothing about cannabis and had no meters at all so it was best guess growing. 
My guess is your tap water will work if you adjust the ph range. The growth rates will probably be a little slower because of the higher EC and some strains will be influenced more than other. Some growers mix in either rainwater or distilled water to lower the background EC. This works well as an alternative to changing the water source completely.

For me, I live where rain is easy to come by. I set up my 50 gallon rain barrel and that’s all I use now, pure rainwater. It’s free, very low background EC, and zero carbon footprint.

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Posted : October 21, 2021 3:05 pm
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greentomato
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@macky only got a cheap ppm pen and it says 304

 
Posted : October 21, 2021 3:12 pm
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greentomato
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@monkeydo that’s the ideal for me 

 
Posted : October 21, 2021 3:14 pm
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Wrh
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@monkeydo hi monkey do you filter your rain water ie bugs etc my tap water even after sitting for 24 hrs has an ec of. 6 and I've been using it for growing for 12 years it is a struggle but you get used to how to use what you have 

 
Posted : October 21, 2021 3:51 pm
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@wrh no, rainwater is good to go as is. Bad bugs won’t live in it and any microbes are good for the plants. Never had a problem and plants love it, it’s what they evolved using.

When backpacking we drink rainwater straight from the sky when we can get it collected properly.

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Posted : October 21, 2021 6:07 pm
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