Whoaaaaa.. Wait a sec!! 1 Gal Pots as measurement for mixing? - Organic Soil - International Cannagraphic Magazine Forums

PaulieWaulie · 02-27-2018, 01:17 AM

I just realized that the "1 Gallon Nursery Pot" that I have been using as a measuring container is not actually 1 Gallon, as in 3.785L (1 Liquid US Gallon) But much less at 2.5L I measured 10X 250m measuring cups to fill it. Maybe 11. This is without major compaction, just light compact enough that there are no air pockets.

I did a quick search and it seems this is standard with Amazon

"NOTE: 1 gallon of loose soil will fit in this pot when compacted. Actual liquid volume is 2.9 quarts"

"These pots actually hold 0.664 gallons and not 1 full gallon"

So all those mix recipes, did they use 1G nursery pots or an actual US Liquid Gallon Container at 3.787L.

Im assuming 3.785L Measuring container, which means that

I have been making my mixes 26% too strong!!!!!!

and yes the plants arent happy, else I wouldn't be worried about something like this.

Mikell · 02-27-2018, 01:38 AM

Bit of a face palm a lot of people go through. Some are close but each number can vary by almost 100% in terms of dry volume.

Probably something the British invented based upon the size of a king's asscheek.

Andyo · 02-27-2018, 02:29 AM

yeah an american asscheek would be 3 gallons at least .A

Easy7 · 02-27-2018, 02:39 AM

Liquid gallons are different than dry gallons, for some reason.

PaulieWaulie · 02-27-2018, 06:19 AM

Close, guys but its deeper than that.

US DRY Gallon = 4.4L
US Liquid Gallon = 3.785L
Imperial Gallon = 4.54L

Any of those would be totally ok and understandable. more or less 4L to a gallon as standard. But a 1 Gallon pot isn't any of those.

the 2 popular ones I checked on amazon were 2.9L

and the other .66 G (.66X4L = 2.64L)

My own measurements gave me 11x250 ml cups = 2.75L

so all of these are still one whole liter below the measurements.

Who the hell decided to apply a street weight system to nursery pots and just shave off 33% of the top and call it a gallon !!!

Real question is, are the creators of mix recipes using a 1 gallon nursery pot as measurement like many would, or should I use an actual 4 L Container.

KIS · 03-01-2018, 01:18 AM

A 1 gal Nursery Pot is really a #1 container. Nowhere near a gallon. Sorry you're learning this the hard way.

The best bet is to take the container you want to use and then measure what it holds, leaving an inch or so at the top.

Many fabric pots are now "true to size" so you really just need to start with what size container you have and go from there.

Most soil mixes are really just ratios so you can scale them based on what you're doing. I can't comment as to how most mixes on the internet have been created, they are all over the board.

troutman · 03-01-2018, 02:04 AM

I guess it's time to break out the large measuring cup and don't trust the unknown.

Bud Green Sr. · 03-01-2018, 02:53 AM

it's a dumb system, but that's that way it is...

Nursery pots were never really called "one gallon or two gallon or three gallon...
Look on the bottom.. It just says Number 1 or Number 2 or Number 3..

KIS has it right... Most formulas are given as ratios, so it doesn't matter if your measuring device is an old coffee can, a random big bucket or a pickup truck bed..
the ratio is still the same...

PaulieWaulie · 03-01-2018, 06:14 PM

Quote:

Originally Posted by Bud Green Sr.

it's a dumb system, but that's that way it is...

Nursery pots were never really called "one gallon or two gallon or three gallon...
Look on the bottom.. It just says Number 1 or Number 2 or Number 3..

KIS has it right... Most formulas are given as ratios, so it doesn't matter if your measuring device is an old coffee can, a random big bucket or a pickup truck bed..
the ratio is still the same...

Yes the Base MIX I wasn't worried about as it is ratios of EWC/Peat/Perlite etc. But ammendments are all per Cubic Foot (8 Gallons) and Im breaking down the recipe to a per gallon basis since I don't want to mix up large batches to do experiments and Im going to be doing a lot.

Il just start using a 4L Ice cream bucket from now on as a 1G measurement and assume that my previous mixes were 25% stronger than I had assumed. Rather be 25% weaker if anything.

troutman · 03-01-2018, 07:08 PM

Quote:

Originally Posted by PaulieWaulie

Il just start using a 4L Ice cream bucket from now on

Any excuse to buy ice cream is a good one.

02-27-2018, 01:38 AM	#2
Mikell Dipshit Know-Nothing Join Date: Aug 2013 Location: Van Isle, BC Posts: 4,971	Bit of a face palm a lot of people go through. Some are close but each number can vary by almost 100% in terms of dry volume. Probably something the British invented based upon the size of a king's asscheek.
	Quote 1 members found this post helpful.

02-27-2018, 02:29 AM	#3
Andyo Senior Member Join Date: Mar 2007 Posts: 1,192	yeah an american asscheek would be 3 gallons at least .A __________________ No surrender
	Quote 6 members found this post helpful.

02-27-2018, 02:39 AM	#4
Easy7 Senior Member Join Date: Sep 2012 Posts: 1,575	Liquid gallons are different than dry gallons, for some reason. __________________ This is username Easy7, NOT username EasyGoing. They say geniuses pick green
	Quote

03-01-2018, 01:18 AM	#6
KIS Member Join Date: Feb 2016 Posts: 121	A 1 gal Nursery Pot is really a #1 container. Nowhere near a gallon. Sorry you're learning this the hard way. The best bet is to take the container you want to use and then measure what it holds, leaving an inch or so at the top. Many fabric pots are now "true to size" so you really just need to start with what size container you have and go from there. Most soil mixes are really just ratios so you can scale them based on what you're doing. I can't comment as to how most mixes on the internet have been created, they are all over the board.
	Quote 3 members found this post helpful.

03-01-2018, 02:04 AM	#7
troutman Seed Whore Join Date: Dec 2016 Location: In the Fridge Posts: 1,603	I guess it's time to break out the large measuring cup and don't trust the unknown. __________________ I just died.
	Quote

02-27-2018, 01:17 AM	#1
PaulieWaulie Member Join Date: Sep 2008 Location: Kanada Posts: 463	Whoaaaaa.. Wait a sec!! 1 Gal Pots as measurement for mixing? I just realized that the "1 Gallon Nursery Pot" that I have been using as a measuring container is not actually 1 Gallon, as in 3.785L (1 Liquid US Gallon) But much less at 2.5L I measured 10X 250m measuring cups to fill it. Maybe 11. This is without major compaction, just light compact enough that there are no air pockets. I did a quick search and it seems this is standard with Amazon "NOTE: 1 gallon of loose soil will fit in this pot when compacted. Actual liquid volume is 2.9 quarts" "These pots actually hold 0.664 gallons and not 1 full gallon" So all those mix recipes, did they use 1G nursery pots or an actual US Liquid Gallon Container at 3.787L. Im assuming 3.785L Measuring container, which means that I have been making my mixes 26% too strong!!!!!! and yes the plants arent happy, else I wouldn't be worried about something like this.
	Quote

02-27-2018, 06:19 AM	#5
PaulieWaulie Member Join Date: Sep 2008 Location: Kanada Posts: 463	Close, guys but its deeper than that. US DRY Gallon = 4.4L US Liquid Gallon = 3.785L Imperial Gallon = 4.54L Any of those would be totally ok and understandable. more or less 4L to a gallon as standard. But a 1 Gallon pot isn't any of those. the 2 popular ones I checked on amazon were 2.9L and the other .66 G (.66X4L = 2.64L) My own measurements gave me 11x250 ml cups = 2.75L so all of these are still one whole liter below the measurements. Who the hell decided to apply a street weight system to nursery pots and just shave off 33% of the top and call it a gallon !!! Real question is, are the creators of mix recipes using a 1 gallon nursery pot as measurement like many would, or should I use an actual 4 L Container.
	Quote

03-01-2018, 02:53 AM	#8
Bud Green Sr. I dig dirt Join Date: Sep 2013 Location: in the hills Posts: 2,633	it's a dumb system, but that's that way it is... Nursery pots were never really called "one gallon or two gallon or three gallon... Look on the bottom.. It just says Number 1 or Number 2 or Number 3.. KIS has it right... Most formulas are given as ratios, so it doesn't matter if your measuring device is an old coffee can, a random big bucket or a pickup truck bed.. the ratio is still the same... __________________ ... Isn't Mother Nature grand !
	Quote