what is the cheapest way to get Low PPM water

please let me know how low i can get the ppm and how expensive it will be

Anybody???

Get rain water

Rain water has a super low ppm and you can add much more fertilizer to it compared to tap water. Another thing is that rain water keeps your PH-value much more stable. Tap water often has a lot of calcium in it making the ph-value float much more. Will be stable after some time though. I would make an efford into getting rain water - i can easily tell when my plants get it. They just get much healthier looking.

its getting close to winter and i dont know how much more rain ill be getting, do you know if walmart or somewhere sells water so i can just buy a bunch of filterred stuff? anybody know? and if i was going to use tap water as a last choice because its to expensive how can i get rid of the calcium is there a cheap filter i can buy to run it through or what

My tap is at 700+ ppm (I know horrid) so I get RO from a local water dealer its like 3.50 for 5 gallons. Cheaper if I buy the 5 jugs a month plan and they drop it off for 2 bucks! so like 20 bucks month for 25 gallons delivered!! Culligan or any bottle water places should have programs like that. RO water come in at <20ppm so get some calmag if you do that also to supplement the nutes.

Okay - so this is what you do easily and very cheap with tap water:
1: First fill tray with tap water.
2: Put in the nutes until ppm is high enough (nutes will mostly lower PH some)
3: After some hours take a ph-test - it will probably be too high still
4: Buy some car battery acid which is sulfuric acid. Be carefull because it's acid, but thin it with water like 9:1 to make it easier to controll. This is not dangerous to your plants or you and it is what you'll get if you bought ph-down from a hydro shop. Just be a little carefull when handling it and wash your hands if you get something on you. Don't worry - it's not going to explode or something like that. Just poor a little into your water when you need ph-down.

Hope you could use this.

funny rain water ive tested in some countries is at 800 ppm. acid rain toxic.
use a water filter. hydro logic has good ones and an upgrade filter to remove the chloramines. most think using an ro will do this but it will only remove them partialy.

you havent even said what the ppm of your water is. that ppm is food for them to depending how high it is.

Medi 1 said:

funny rain water ive tested in some countries is at 800 ppm. acid rain toxic.
use a water filter. hydro logic has good ones and an upgrade filter to remove the chloramines. most think using an ro will do this but it will only remove them partialy.

you havent even said what the ppm of your water is. that ppm is food for them to depending how high it is.

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Ah - off course you're right. Never thought of something like acid water like that. Brandon has to test that before adjusting the ph-calue off course.

i was curious of this when i was in ontario a while back being the water there is shit.,...big time. and i tested the sniow and was just as bad. in the 9`s for ph and up to 900 for ppm in some ereas.

http://www.purewaterclub.com/ they have plenty of options for RO/DI filters for around a hundred bucks. RO/DI filter will bring your water to 0 ppm.

Walmart sell gallon spring water for around $0.80, the ppm is around 200 on that..
Theres a store on ebay, called "the hydro-source", they have a Hannah PPM meter for around $25 shipped to your door, mine works great compared to my buddies expensive one(measures the same) just not sure if it will last as long as an expensive one. either way, good luck