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Questions Hard Water Residue on Leaves

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Topic starter

Hey guys,

Im in a hard water area and I do filter my water but after a couple of months there’s a some white dusty residue on some of my leaves in my tent. 

I plan to get a filter for the humidifier but I’m just not able to get a full ro setup at the moment but I’m looking into other ideas to try and help in the mean time.

Anyways Im in week 3 of flower and have trichs so I don’t want to hand clean my leaves (it does come off easily with a damp wipe it’s not powdery mildew). I have a big jug of distilled water I use for my dab rig so was gonna put that into a pump sprayer with a touch or organic apple cider vinegar, raise the lights and give them a good misting (not a hard jet).

Does this sound like a good plan or is there something else I can do?

2 Answers

I stopped the white dusty mist from my humidifer by using RO water, i found a filter for like £30, more then big enough to supply a humidifer 

Edit@ nvm was mistaken it was £40 https://www.amazon.co.uk/gp/product/B00V88Y32O/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 only solution i know sorry 

“Herb is the healing of a nation, alcohol is the destruction.”
― Bob Marley

Yoshi Yoshi Topic starter November 29, 2021 10:29 am

Thanks mate, it's more that I cant setup anything from the mains water at the moment. I can use anything gravity fed from a res though. 


The white dust are minerals from the water, mostly calcium carbonate. Put distilled water into the humidifier and the white powder will stop. It’s the cheapest solution I know of.

I use rainwater in mine and there’s no dust but I do have to change the wicks more frequently with rainwater.

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Yoshi Yoshi Topic starter November 29, 2021 4:39 pm

I go thorough about 5ltrs a day so using distilled water like I have at the moment would cost me about £30 a week I think 😂

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