Gallon to Litres : US Liquid vs Imperial ... going potty

Greetz Growers

I'm in South Africa where we use the Metric System of standard units of measure.

I'm seeing gallon to litre conversions all over on web sites and grow forums where:

Half the people convert as:

• 1 gallon = 3.785 litres
• US liquid gallon

And the other 8/16ths convert as:

• 1 gallon = 4.54609 litres
• Imperial gallon

Can someone please give me a definitive answer ?

I'm going a little mad trying to work out my metric pot sizes.

Thanks buds

- - -
living soil
god's halogen

Im fairly certain they are using U.S gallon.

Thanks @GeneBanker

GeneBanker said:

Im fairly certain they are using U.S gallon.

Click to expand...

That would seem to make logical sense to me too ...

... seeing as most sites and growers are US based

But then again ...

... logic and pre-metric era measurement systems are not always compatible

you definitely want US gallon..

I also just made a post about this earlier today! its even more confusing.


tldr = most of what you see are products from China that are actually liter size pots, rebranded for use in the US. so a 10 liter pot which is 2.64 gallons is sold as a 3 gallon etc.

I would go by country of manufacture. stuff coming from China is 99% going to actual be some liter size. stuff made in the US would be actual gallon size. its pretty much impossible to tell any other way, believe me I have tried, and only figured this out bc I was also going slowly insane trying to find a pattern to this madness. Also its not 100% effective. Unfortunately its a little bit of a dice roll either way.

ilovereggae said:

believe me I have tried, and only figured this out bc I was also going slowly insane trying to find a pattern to this madness

Click to expand...

It appears to be a case of:

The more you read up ... the less you seem to understand.


- - -

In the interests of clarity then ... here's my actual question behind my question.

I've bought 8 of these:



- food grade
- 25 litre total capacity

So would a typical grow post would describe these as

- 6.6 gallon pots

TaoRich said:

It appears to be a case of:

The more you read up ... the less you seem to understand.


- - -

In the interests of clarity then ... here's my actual question behind my question.

I've bought 8 of these:

View attachment 4748794

- food grade
- 25 litre total capacity

So would a typical grow post would describe these as

- 6.6 gallon pots

Click to expand...

I live in the UK and I had a lot of trouble with this. A USA gallon is 6 pints a British Gallon is 8 pints, as you already use litres I would stick with that @ilovereggae seems to have said the best stuff, I bought some 3 gallon pots from ebay which I thought were quite big but that was me, yes a UK gallon is 4.5 litres.

LOL had the same problem just dont understand why a US gallon different form uk gallon ,but we use liters which i think is better OP should go with whats on the pot ,,,the more u read on US gallons and uk ,just makes my baked weekend head hurt lol

TaoRich said:

Greetz Growers

I'm in South Africa where we use the Metric System of standard units of measure.

I'm seeing gallon to litre conversions all over on web sites and grow forums where:

Half the people convert as:

• 1 gallon = 3.785 litres
• US liquid gallon

And the other 8/16ths convert as:

• 1 gallon = 4.54609 litres
• Imperial gallon

Can someone please give me a definitive answer ?

I'm going a little mad trying to work out my metric pot sizes.

Thanks buds

- - -
living soil
god's halogen

Click to expand...

defo that you are using US gallon thin in MHO liters are better but then again US liters are different doooooohhhhhhh

TaoRich said:

So would a typical grow post would describe these as
- 6.6 gallon pots

Click to expand...

So bottom line is ...

When I see folks talking about (very) general rules of thumb like:

• one foot of plant per gallon of pot
• half an ounce yield per gallon of pot

I'm going to think of my 25 litre pots as 6.5 gallons

Thanks all for your comments and input

TaoRich said:

So bottom line is ...

When I see folks talking about (very) general rules of thumb like:

• one foot of plant per gallon of pot
• half an ounce yield per gallon of pot

I'm going to think of my 25 litre pots as 6.5 gallons

Thanks all for your comments and input

Click to expand...

So would be that US gallons

insomnia65 said:

So would be that US gallons

Click to expand...

lol

insomnia65 said:

So would be that US gallons

Click to expand...

Cannabis grower gallons


That's as much as I am prepared to say.

Footnote

If I grew up and schooled in the US ... and had been taught ounces pounds gallons inches feet Fahrenheit ...
... I would head back to my school ... and punch my science teacher.

Sixty four sixteenths times ... just to to be sure.

TaoRich said:

Cannabis grower gallons


That's as much as I am prepared to say.

Footnote

If I grew up and schooled in the US ... and had been taught ounces pounds gallons inches feet Fahrenheit ...
... I would head back to my school ... and punch my science teacher.

Sixty four sixteenths times ... just to to be sure.

Click to expand...

here is a link to a conversion website.....let it do the math for you

https://www.metric-conversions.org/volume/us-liquid-gallons-to-liters.htm

I'm from México, and I use liters but when I read up info. about proper proportions for a soil mix or food recipe, whatever, I always think of those gallons as US gallons. Why couldn't you be normal and use liters instead! Just kidding. But yeah especially since tent measurement and such are in feet and inches, us gallons seemed to me like the most proper one.

1 cubic centimetre
= 1 millilitre

1 millilitre of water
= 1 gram

- - -

1,000 cubic centimetres
= 1,000 millilitres
= 1 litre

1,000 grams
= 1 kilogram

1,000 grams of water
= 1 litre of water
= 1,000 millilitres of water

- - -

water boils at 100 °C
water freezes at 0 °C

- - -

That ... and your 1,000 timetable ... is all you ever need to learn about the Metric System.

No calculators
No conversion tables

And you can calibrate anything with a 1 cm ruler and a glass of water.

Does any of the following look familiar ?

byte
kilobyte
megabyte
gigabyte
terabyte



Could you imagine measuring a file size as:

• 23 milebytes, 45 yardbytes, 6 footbytes, and 7/8ths of an inchbyte

#justsaying

TaoRich said:

Cannabis grower gallons


That's as much as I am prepared to say.

Footnote

If I grew up and schooled in the US ... and had been taught ounces pounds gallons inches feet Fahrenheit ...
... I would head back to my school ... and punch my science teacher.

Sixty four sixteenths times ... just to to be sure.

Click to expand...

I grew up in the UK and we learnt all that except some things are awry to US (celsius though not Fahrenheit)

My teachers were great, my music teachers borrowed Led Zep albums off me and the chemistry teacher was funny. Mind you priests and nuns can be bloody nuts.

TaoRich said:

It appears to be a case of:

The more you read up ... the less you seem to understand.


- - -

In the interests of clarity then ... here's my actual question behind my question.

I've bought 8 of these:

View attachment 4748794

- food grade
- 25 litre total capacity

So would a typical grow post would describe these as

- 6.6 gallon pots

Click to expand...

imho there is no standard. unless you know the exact pots someone used, it's all a gray area. i have also never seen anyone use those specific pots so I couldn't tell you for sure. will they work? absolutely. you might need to experiment with drainage holes. thats also something that will be different than someone using a specific size pot that is specifically made for plants, whereas you are modifying food grade buckets... Ultimately your space, microclimate, and strains will all be different anyway. Its best to use other people's grows as inspiration and examples but not an exact recipe to follow.

ilovereggae said:

imho there is no standard. unless you know the exact pots someone used, it's all a gray area. i have also never seen anyone use those specific pots so I couldn't tell you for sure. will they work? absolutely. you might need to experiment with drainage holes. thats also something that will be different than someone using a specific size pot that is specifically made for plants, whereas you are modifying food grade buckets... Ultimately your space, microclimate, and strains will all be different anyway. Its best to use other people's grows as inspiration and examples but not an exact recipe to follow.

Click to expand...

As above, at.the end of the day you just find out what's right for you.