G
Guest
Thanks Tester,nobody is going to convince me that a 1 gallon pot and a 1 gallon milk jug have the same volume,no way.I know what a 1 gal. pot is lol and a 1 gal milkjug will hold a lot more dirt than a 1 gallon pot!
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G
Guest
I'm going to test it when I get a chance,just cut the top off a milkjug and see what it holds compared to a 1 gal pot.I just eyeballed them and its closer than I thought,but the milkjug still is at least 25% bigger.
kurlyq2g
Member
man, all this talk of milk containers makes me want to use some for an experiment..
fill 'er up with some hydroton, cut a hole(s) in the bottom for drainage, attach your flood line and let her go... (of course there is more to it then that, but you get it)
just an idea to use the stuff i have .. i am sure it is not the best system out there, but it looks like a fun idea to try..
fill 'er up with some hydroton, cut a hole(s) in the bottom for drainage, attach your flood line and let her go... (of course there is more to it then that, but you get it)
just an idea to use the stuff i have .. i am sure it is not the best system out there, but it looks like a fun idea to try..
At first I was confused like some in this thread also, and for good reason. I just assumed a 1 gallon potting container held 1 gallon volume and so on.
Turns out the state of NJ I believe had a few complaints from nursery customers claiming that the containers listed a certain volume yet when tested by the consumers found out the containers didn't really hold what they claimed. So the NJ board of weights and measures decided to do a little testing of it's own. Turns out a LOT of the containers didn't really hold what they said they held and NJ decided that this was against the labeling laws of the state. Then the feds caught on and the entire container industry had to change (or is in the process) of changing it's containers to accurately reflect the actual volume they hold. There are laws now where legit growers, nurseries and even reatil places like home depot now have to comply with the new laws that state each container must have a lable and this label must specify the exact quantity of volume held because in the past these outlets would sell containers by size like 6", etc and it was assumed all 6" would hold a certain volume and it turned out not to be true. I think it may have been a scam on the public to sell a smaller volume yet claim it was actually more, yet I'm not positive why this was ever the case to begin with.
Thus, your one gallon nursery pot will not hold 1 gallon of soil, but if you go to the store and buy a one gallon graduated cylinder for like iced tea this will measure and hold one gallon. That's how I measure when figuring out how much dolomite lime to add. If you did it with a 1 gallon nursery container you were probably overliming.
Turns out the state of NJ I believe had a few complaints from nursery customers claiming that the containers listed a certain volume yet when tested by the consumers found out the containers didn't really hold what they claimed. So the NJ board of weights and measures decided to do a little testing of it's own. Turns out a LOT of the containers didn't really hold what they said they held and NJ decided that this was against the labeling laws of the state. Then the feds caught on and the entire container industry had to change (or is in the process) of changing it's containers to accurately reflect the actual volume they hold. There are laws now where legit growers, nurseries and even reatil places like home depot now have to comply with the new laws that state each container must have a lable and this label must specify the exact quantity of volume held because in the past these outlets would sell containers by size like 6", etc and it was assumed all 6" would hold a certain volume and it turned out not to be true. I think it may have been a scam on the public to sell a smaller volume yet claim it was actually more, yet I'm not positive why this was ever the case to begin with.
Thus, your one gallon nursery pot will not hold 1 gallon of soil, but if you go to the store and buy a one gallon graduated cylinder for like iced tea this will measure and hold one gallon. That's how I measure when figuring out how much dolomite lime to add. If you did it with a 1 gallon nursery container you were probably overliming.
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Requires some geometry
Requires some geometry
To change cubic inches to u.s. dry gallons multiply by .00372
All of these are measured with inches
radius is 1/2 across the distance from one side to the other of a round container. From one side to the other of a round container is diameter. Radius = 1/2 diameter
For a round container: radius x radius x 3.14 x height = cubic inches. 1728 cubic inches = 1 cubic foot
For a square container: length x width x height = cubic inches. 1728 cubic inches = 1 cubic foot
Requires some geometry
To change cubic inches to u.s. dry gallons multiply by .00372
All of these are measured with inches
radius is 1/2 across the distance from one side to the other of a round container. From one side to the other of a round container is diameter. Radius = 1/2 diameter
For a round container: radius x radius x 3.14 x height = cubic inches. 1728 cubic inches = 1 cubic foot
For a square container: length x width x height = cubic inches. 1728 cubic inches = 1 cubic foot
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sproutco said:
So after hurting my brain for a bit, I get 230 cubic inches = 1 gallon
Also, after looking in a container catalog I have (ITML) they list cubic inches and even convert to gallons. There are hardly any exactly 1 gallon containers.
I think this is why they traditionally just adopted a method of calling anything over .5 gallon but under 1.5 gallon a gallon container and so on. In other words, they just rounded the numbers. I guess they figured it was easier and wouldn't confuse the consumer.
So my 1 gallon graduated cylinder from the store measures ~6 inches top dia and stands 8.5 inches, which equals 240 cubic inches, thus ~1 gallon.
I don't think your supposed to convert to dry volume as The Tester posted but maybe I'm wrong. Does anyone know?
The thing that cracks me up is, when I first read the title of this post, I thought, "What a simple question, seems easy enough". After two pages I'm not so sure. lol
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onlinconversion.com
1 liuid gallon (us) = 231 in^3
1 dry gallon (us) = 268.802 in^3
1 gallon [US, dry] = 1.163 gallon [US, liquid]
1 gallon [US, liquid] = 0.859 gallon [US, dry]
so
6x6x7.25in =261in^3=1.130gallon liq=.970gallon dry
10x10x10in =1000in^3=4.329 gal liq=3.720 gal dry
pi x r^2 x depth = vol. of round pot
so 10 in diameter 10 deep =
3.14x25inx10in=785in^3=3.398 gal liq=2.920 gal dry
7in diameter 7 deep=269.255in^3=1.166 gal liquid=1.002gal dry
im done thinking now
for real
1 liuid gallon (us) = 231 in^3
1 dry gallon (us) = 268.802 in^3
1 gallon [US, dry] = 1.163 gallon [US, liquid]
1 gallon [US, liquid] = 0.859 gallon [US, dry]
so
6x6x7.25in =261in^3=1.130gallon liq=.970gallon dry
10x10x10in =1000in^3=4.329 gal liq=3.720 gal dry
pi x r^2 x depth = vol. of round pot
so 10 in diameter 10 deep =
3.14x25inx10in=785in^3=3.398 gal liq=2.920 gal dry
7in diameter 7 deep=269.255in^3=1.166 gal liquid=1.002gal dry
im done thinking now
for real
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I think we got it now.sproutco said:
Example: 6" wide pot 6" tall.
3 x 3 x 3.14 x 6 = 170 cubic inches
To convert to dry gallons, 170 x .00372 = .63 dry gallons
A dry gallon is about .16 cubic feet and a liquid gallon is about .13 cubic feet. Not much difference.
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G
Guest
Screw it,I've been using the 1 2 and 3 gallon black plastic nursery pots and I'm not changing now.My head hurts after trying to figure that out.
G
Guest
I mix in a 35 gal tub. If something calls for a tspn per gal it's 35 tspns. Not exactly rocket science but it works for me. Not like the plant is gonna bitch at me fer missin a gram!
A gallon is a measurement of volume. Simple enough, right?
But wait, there's more! The confusion begins here...
In the United States at least, there is a liquid gallon and a dry gallon, which are different! I can't recall the exact numbers, but a US liquid gallon is something like 3 3/4 liters while a dry gallon is something like 4 1/2 liters.
Pretty lame, eh?
There is also an International gallon or such that has an equal dry and liquid gallon volumes; which is why you oftentimes see things labeled "N US gallons" or somesuch. And you thought they put that there just to show pride, like "Made in USA"...
Edit: I wouldn't be surprised if this dry / liquid difference may have been invented by the oil / petroleum industry in order to confuse & screw consumers.
But wait, there's more! The confusion begins here...
In the United States at least, there is a liquid gallon and a dry gallon, which are different! I can't recall the exact numbers, but a US liquid gallon is something like 3 3/4 liters while a dry gallon is something like 4 1/2 liters.
Pretty lame, eh?
There is also an International gallon or such that has an equal dry and liquid gallon volumes; which is why you oftentimes see things labeled "N US gallons" or somesuch. And you thought they put that there just to show pride, like "Made in USA"...
Edit: I wouldn't be surprised if this dry / liquid difference may have been invented by the oil / petroleum industry in order to confuse & screw consumers.
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G
Guest
How many 1 gallon pots of dirt would it take to fill a 10 gallon hat?
SKELETOR said:
10 dry gallon capacity hat, or 10 liquid gallon capacity hat? I ask only because I'm unaware of hats being measured in volume by gallons. And are you speaking US gallons, or Imperial (that's the term!) gallons?
Assuming the hat has been figured for a "dry" fill, and we're using equivalent measurement units, it would be 10 x 1 gallon pots of dirt to fill a 10 (dry) gallon capacity hat. Of course if you wanted to know how many 1 gallon (US or otherwise) pots of dirt would fill a 10 US gallon hat which is typically used to store liquids (don't ask), then the answer would of course be different.
SKELETOR said:
To make things simpler, if you asked: How many 1 gal pots of dirt would it take to fill a 10 gal beverage container? (Assuming US gallons here)
The answer would be (rounded to the nearest 1000 decimal places): ~8.5936696267143470747470307958166435256864879983218627323670725494700882020956738020796915423879493761924264066885756809940965528263627373615287031395151381966017720330433219126769286092437394492113753733355974867896634735443657540130455194733845431570956238575181548481185883669127268731707804337185723846530351310045849107490685339273406518764171769336036998931186383114742635674401414429982719181708303782801090789223961402842844442668637812028648200497447832905474922835652425807353837240662864220715006342959315160172208848178521840756759996403991569358012606007331861633586718742196162259891520412342300046947887844492613199348722917561506727532438992718082927949975527164847019808013105452947228576280328834993157595069472885097541728681163908062051123253188960254117929098700442508815215111226538542218137866967665890861144130015682592322522000579356913825653524587707644514588806424868396080350810600233740547991729180609523428993816863281757249453107051173197750496948387290107980142042333010
pots of dirt.
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