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  #1  
Old 01-07-2007, 06:10 PM
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Default How much vinegar to lower PH

I have an organic hydro DWC system. Each bucket holds 3 gal. water. The PH from the tap water is 7.8. I have put a lot of vinegar (9 TBSp) into the 3 gallons and it only lowered it to 7.5.

Is is supposed to take that much vinegar for such a small change? I want to make sure before I add even more vinegar.
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  #2  
Old 01-07-2007, 06:35 PM
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I would skip the vinegar and use GH ph down.
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Old 01-07-2007, 06:53 PM
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Quote:
Originally Posted by SMARMY ARMY
I would skip the vinegar and use GH ph down.
I just ordered some Earth Juice PH down, but it won't be in for another week and I wanted to get my PH level down ASAP. Will it do much damage to leave it at 7.8 in the meantime?
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Old 01-07-2007, 07:01 PM
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Vinegar does not work well in a hydro system. I tried it and it only lasted a day and went right back up. Also, it caused some slime to form in the res.

Since you want to be organic, I'm not sure what to use until your stuff arrives.

I am not organic and I use PH- (Dry Acid) for swimming pools. Sometimes you can get it at Walmart or Walgreens. Maybe that can get you by.
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Old 01-11-2007, 12:00 PM
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i use nutrafin ph adjust. it's aquarium stuff, about three bucks for a 30ml bottle with and eyedropper style top (they make an up and a down, so six or seven bucks for the set, if you want both...). you can pick it up in pretty much any pet store, and some walmarts stock it too.
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Old 01-11-2007, 12:09 PM
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My Earth Juice PH down is arriving tomorrow, so I'll use that.

The plants haven't been growing very fast, and I think it's because of the high PH. One of these days I'll get a RO system, but since I rent the house I don't want to install something that I'd have to un-install when I move.
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Old 01-11-2007, 12:22 PM
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you can get r/o water from those glacier vending machines for real cheap that what I do. and they make portable r/o systems
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Old 01-11-2007, 12:41 PM
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Quote:
Originally Posted by SMARMY ARMY
you can get r/o water from those glacier vending machines for real cheap that what I do. and they make portable r/o systems
I looked at one of those machines, but it doesn't say it is RO. I think it just says it is purified. It was a big machine that looks like a windmill.
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Old 01-11-2007, 08:51 PM
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Quote:
Originally Posted by HappyHappyHighGuy
I looked at one of those machines, but it doesn't say it is RO. I think it just says it is purified. It was a big machine that looks like a windmill.
That's the one. It uses Reverse Osmosis (sp?) to purify the water. I think it says it some where on the machine in very small print.
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Old 01-11-2007, 09:22 PM
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Quote:
Originally Posted by AlienBait
That's the one. It uses Reverse Osmosis (sp?) to purify the water. I think it says it some where on the machine in very small print.
What size bottle do you fill?

How much does it cost to fill a bottle?
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