Can i use my de-humidifier water for my plants?

Aluminum (Al) toxicity is a major constraint for crop production in acidic soil worldwide. When the soil pH is lower than 5, Al3+ is released to the soil and enters into root tip cell ceases root development of plant. In acid soil with high mineral content, Al is the major cause of phytotoxicity.
Aluminum stress signaling in plants - NCBI - NIH
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2710549/

Lite said:

Aluminum (Al) toxicity is a major constraint for crop production in acidic soil worldwide. When the soil pH is lower than 5, Al3+ is released to the soil and enters into root tip cell ceases root development of plant. In acid soil with high mineral content, Al is the major cause of phytotoxicity.
Aluminum stress signaling in plants - NCBI - NIH
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2710549/

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When soil pH is lower than 5, which is deadly to plants in the first place.

If your dehumidifier runoff is below pH 5, something is fundamentally wrong.

The vast majority of aluminum is aluminum oxide, which is not a problem for plants.

I mean technically anything in excess is toxic to your plants. Overwatering is fatal, doesn't mean I'm not going to water them. Anyways the test kit I ran had undetectable levels of al, cu, and pb, which are the three elements that my dehu would leach into the water if it did.

Gumdrawp said:

I mean technically anything in excess is toxic to your plants. Overwatering is fatal, doesn't mean I'm not going to water them. Anyways the test kit I ran had undetectable levels of al, cu, and pb, which are the three elements that my dehu would leach into the water if it did.

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As long as pH levels are above 7 and EC is low there's no reason to believe anything would leach into that water.

ginoSA said:

Hey guys and gals

Is it safe to use my dehumidifier's water on my plants?

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It's distilled water essentially. Not the best to water with, although may be great for flushing..gonna try distilled water flush on a couple this grow

Test it with an ohm meter. Voltage will not pass thru distilled water

run the water through some carbon or a brita, just need to add cal-mag epsom salt with air stone would make it better, my dehum sits on top of 20-gal black bucket with the line right into it with valve at bottom for use this is in the flower room

edit: organic soil grow

Yes you totally can ,just add minerals since your dehuie water is 0 ppm. add some cal and some mag and you are golden

Dehumidifier water can be used for watering container plants and in hydroponic reservoirs. It reads 10ppm or less on a TDS meter. Water that sits stagnant can harbor mold and bacteria however, so you may want to oxygenate the water before using it. Oxygen levels are easily increased by shaking it in a jug or adding hydrogen peroxide. This will kill the harmful bacteria and your plants will benefit from the extra oxygen. The dehumidifier water is very soft water, since it has been recondensed from vapor which lost its mineral content when it evaporated. Many people use it to soften their tap water.

WARNING: Dehumidiers often employ copper tubing. If the resulting water is 10ppm its possibly 10ppm of copper. Adding this to your reservoir every time will start concentrating the metals-- since plants only need under 1ppm of copper, using this water could accumulate to the 100ppm toxicity level.

Old thread but was wondering if anybody else is using humidifier water for their plants?

I use dehumidifier and split AC water for my reservoirs. I dont top off water a single time in either my veg or bloom.

my small circle of friends who grow all use dehumidifier water... but not AC.

point is its fine to use it. it has very little to no minerals in it. last i checked it was 0.0 ec. itll save u some cheese on your water bill.

but i mainly did it so i didnt have to top off water... only nutrients. makes my job a little easier

i have 0 problems with it and so will you. if something goes down it wont be related to ur dehumidifier/ac water.