thanks i thought it was 5 for some reason. but now i know how much water to buy. whole foods in my area sells RO water for 39 cents a gallon
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Ok, I think we all need some clarification for us U.S. non metric arse holes. So @Stephen how many gallons exactly is our res? This should put things more into perspective and allow us to do our math(or should I say maths 
) properly ! Thanks in advance Stephen
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I think I got lucky. The hydro store near me is pretty cheap. I got the small bottle of bud candy for 15.00 bux. I got sensi grow a&b for 9 bux each.
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2.9 gallons
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That was my estimate. I have a theee gallon jug I use and it’s pretty much perfect. 
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Yea I usually overfill mine any way
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Use amazon can find those cheaper
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