Chlorine in tap water good for plants?

Has anybody else heard of this? i was reading a article on the web that i came across and it was saying that chlorine is actually beneficial to marijuana plants and they love it! And also that nutrient manufactures don't put chlorine in their nutes because it is already accounted for when you use tapwater. I know this sounds kinda funny but i have heard of this before actually a couple times. If this is the case it would be a lot easier than having to lug back and forth 30 gallons of RO water from the water store and less conspicous!

I've seen plants fed with nothing but tap water(bad tap water at that, 500PPM) and they don't look as good as mine that I give nothing but RO to. I got sick of going to the water store too, so I invested in a good RO unit. Ran me about $200. No more trips to the water store for me.

what is the amount of waste water in your unit or do you have it set-up just to supply the plants?

No, I continue to fill my five gallon jugs. Waste water is an issue with RO units. I think I my system is rated for 2-3:1. For every gallon of pure water, 2-3 gallons is wasted. I plan to upgrade my system with a permeate pump that will hopefully reduce waste water significantly(supposed to be up to 80% savings).

I have heard that if you let tap water set for a few days in an open container all the chlorine evaporates. Also I saw if you buy a cheap aquarium pump and airstone , and put it in your container, it helps. I am currently trying it. My water is 7.4 ph out the tap. For some reason it drops after a few days in the open.

It's true that you should let tap water sit for a day or two so the chlorine evaporates. You need to remember, though, that much of the mineral and sediment remains. Taking the step is surely beneficial, though.

Putting a bubbler and an airstone in the water is beneficial because it keeps your water oxygenated, which your plant's roots will love.

It drops in ph because the chlorine is evaporating.

since no one has answered your question here you go:

Chloride is involved in the evolution of oxygen in the photosynthesis process and is essential for cell division in roots and leaves. Chlorine raises the cell osmotic pressure and affects stomata regulation and increases the hydration of plant tissue. Levels less than 140 ppm are safe for most plants. Chloride sensitive plants may experience tip or marginal leaf burn at concentrations above 20 ppm.

chlorine is also benefitical in killing pathogens that build up in your res. of course you need to first determine the ppm of chlorine in you tap water.

Wow thanks stuck
I have an arogarden and i think i have either chlorine burn or nute burn...hmm
how do i tell how many parts per million of chlorine i have in my tank?
Thanks yo
J

Hydrochronic said:

It drops in ph because the chlorine is evaporating.

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I don't think that's why. For two reasons,

1) Chlorine dissolved INTO water should acidify it, it shouldn't acidify the water when leaving it. Which is does and will we all know.

2) The more probable reason for the pH to drop (become acidic) is that when you leave water out to allow the chlorine to evaporate, carbon dioxide actually gets dissolved into it from the air. This results in the production of carbonic acid.

RXN - H20(l) + CO2(g) = H2CO3 (aq) with is carbonic acid (weak acid). Although it is a weak and unstable acid, it will still drop the pH.

Hydrochronic said:

Has anybody else heard of this? !

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chlorine is a plant nutrient, required in trace amounts. If your tap water has high levels of chlorine,then that is bad and can be managed by ageing (allows free chlorine evaporate), carbon filtration, catalytic carbon (chloramides) or ascorbic acid (chloramides).

My tap water has low chlorine levels so I do not worry about.

wanderingspider said:

I don't think that's why. For two reasons,

1) Chlorine dissolved INTO water should acidify it, it shouldn't acidify the water when leaving it. Which is does and will we all know.

2) The more probable reason for the pH to drop (become acidic) is that when you leave water out to allow the chlorine to evaporate, carbon dioxide actually gets dissolved into it from the air. This results in the production of carbonic acid.

RXN - H20(l) + CO2(g) = H2CO3 (aq) with is carbonic acid (weak acid). Although it is a weak and unstable acid, it will still drop the pH.

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Jesus dude necro post much? The last post was almost 5 years ago. And for a first post its more like your trying to troll then give creditable info.

I am prepared for the shit storm to follow.
Here is some interesting stuff, you don't have to dig far to find 1000s of references to chlorine and chlorides.
On RIU however, you would think we have a brain trust of the worlds leading scientists, given the excessive attention and focus placed on chlorine.
I am no scientist, just a guy trying to understand how and why things are so readily accepted as fact, just because they are repeated over and over.
I'm sure removing chlorine from your water is not harmful, it's just given all the other elements we focus on, wouldn't it be nice to know this is one less step?
I have stopped dechlorinating my water months ago, and I see no appreciable difference.
Here's a few links and short statements. There is tons of info out there, I just haven't found the one that says it harms plants in normal levels. Yes there is info that states EXTREMELY HIGH levels of chlorides interfere with absorption of nutrients, but none of us are ever going to see anywhere close to those levels from our taps!

Chlorine is bountiful in Earth's atmosphere, soils and oceans, typically in the form of a positively-charged ion known as chloride. Chloride atoms bond and break from other atoms readily, creating many compounds useful to man. Chlorine mixed with water acts as a purifying disinfectant and keeps swimming pools and drinking water free from pathogens. Plants tolerate chlorine and utilize it in its chloride form during plant growth. However, excessively high concentrations of chloride are harmful to plants.

Read more: http://www.ehow.com/info_12003849_concentration-chlorine-water-affect-growth-plants.html#ixzz2a4sgBJRp

According to Wade Berry from UCLA, "Plants require relatively high chlorine concentration in their tissues ." He continues to state that plants suffering from a chlorine deficiency will exhibit an unnatural coloring. Furthermore, the leaves may have an abnormal shape and new leaves may wilt and die. In severe cases, bronzing will occur on the tops of mature leaves. To correct this deficiency, simply apply a fertilizer that contains chloride. The average chloride in topsoil is 10 parts per million (p.p.m.). Plant growth suffers if the level of chloride in the soil falls to 2 p.p.m. or lower.

Read more: http://www.ehow.com/way_5729155_chlorine-water-hurt-plants-trees_.html#ixzz2a4quF6X9

The optimal level of chloride in soils and plant tissues is neither universally known nor understood. With no optimal value to use for comparison in experiments, scientists have few other factors to measure and evaluate for a better understanding of chloride levels. Typically, plants can tolerate high concentrations of chloride in the soil without harm, as high as 20,000 parts per million. Dried tissues from healthy plants can reveal internal concentrations of 70 to 100 ppm.

Read more: http://www.ehow.com/info_12003849_concentration-chlorine-water-affect-growth-plants.html#ixzz2a4s6q3d6

It's kind of funny, the EPA standard for chlorine in drinking water is 4ppm. That seems like a LONG way from a harmful level to mj plants.

Since we're talking about tap water.....what do things like fluoride do to pot plants?

lilroach said:

Since we're talking about tap water.....what do things like fluoride do to pot plants?

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A bright smile?

I leave my water out overnight usually also, probably not needed but it brings it up to room temperature and I just thought it was probably not the greatest for the microbes in the soil. I always aerate my water before making teas which accelerates the evaporation of chlorine.