Spawning The Beefy Tub
Edit 12.14.25
Video companion episode to the Beefy Tub Tek!
EDIT 2/23/25. As part of a campaign to update all my old teks, I've updated this tek. I've changed the way I spawn tubs quite a bit I guess and its time to edit this tek, as is my custom. Always be looking for better ways. Whatever you do it life, always be totally into doing that thing and doing it better. So Where ever you see the strikethrough I'm making an edit and I'll use a different color of font for the edit. So I guess I spawn a little differently and I thought Id make a quick tek for my method because I've had such great success with it. I've picked up a few little tricks and tools over the years to make the job a lot cleaner and easier as well. I like a thicc substrate. I find that thicker substrates yield much better and have a greater propensity to flush multiple times.
I use Pasty's Ez Dial Monotubs.
Its not really fair of me to say I use Pasty's tubs. More, I borrowed some concepts from his system and tweaked them somewhat. It really depends on your climate and I've found it can depend on the time of year. I live in a very arid climate and in the winter the air in my place is much drier and I use a little more tap on the holes. I also added a couple holes to the lids. I find that it seems to help with the center of my surface maintaining the right condition. I also found that it helps water not condense on the lid and rain down. Not going to post a whole tek about it or even pictures right now. Just eyeball it and use common sense. I really like these sterilite 16 quart tubs.
I still like them but you can't find them. I use the target brand 16qt now. They're shorter but I don't need much height for the stuff I grow these days. As with my other teks, I've included a lot of visuals. Some things are just easier done than said. I realize there are many threads for spawning a tub but I still see so many poorly prepared subs. Why does it matter? Because inconsistently prepared substrates yield inconsistent results. Also, a lot spawning of teks are combo teks. This tek is meant to be a stripped down and highly visual guide that assumes you already know how to develop clean spawn and prepare coir to field capacity. If you don't, you can find this information in the hitchhikers guide linked in my signature.
EDIT 4/12/25. I had a really confusing paragraph here about my spawn ratio. Forget about it. This tek is to make two tubs using four quarts of spawn total. Two quarts into each tub. Half a brick each, minus a quart each, to be used as top-dress.
A blurb about coir prep: I use a high-cap digital scale to prep coir. I'm not going to write a tek about this, I'll just cover it real quick here.
1. Weigh your brick and multiply that figure by 4.25.
2. Resulting figure is your water weight.
3. Put big pot on scale and tare. Pour Water into the pot or use the dish sprayer thing or whatever you want. I keep a 2.5 gallon jug of filtered water around at all times because.
Ex. 600g brick x 4.25 = 2550g (or 2.55 LITERS)
4. boil water. Pour water into bucket with brick. Put lid on. Do NOT shake it. (or do if you wanna see some shit and possibly get burnt) Done deal. use when cool. (after shaking it a bit) Materials: A bucket of prepped coir.
A clean empty bucket and lid I only add dry verm if I fucked up my field capacity and added too much water. This will soak up additional water but verm is otherwise purposeless.
Two four quarts of clean spawn.
A Mid sized tub with a gasket seal and snap-locks for mixing the ingredients. (Nah) A rubber tile float
(still fuck yeah).
A clean quart jar for measuring Two clean quart jars. You'll see.. No, I don't use liners. Ill get to that. A pair of clean nitrile or latex gloves. Its not necessary in terms of sanitation, but I don't like getting coir under my fingernails.
Optional, A digital High-cap scale.
0. Okay step zero. You take your prepped coir and you split it in half. You can use a high-cap scale to get this perfectly or just eyeball it. If you happen to have a high-cap scale--Which i HIGHLY recommend for a lot of other jobs, namely coir prep--You can put the empty bucket on the scale (no lid) tare it, then put the prepped-coir bucket on the scale, (no lid) and thats your total coir weight. Multiply by .5 and thats half. dump half into the empty bucket. Now take a jar of coir out of each one and set it aside. This will be used later to top-dress1. Break up your spawn and dump it in the
mixing tub.
buckets which now contain half a brick of coir minus a quart jar worth. two quarts of spawn in each one respectively I personally bash it on my thigh but you can use a phone book or a tire or the corpse of your enemies.
2. Break up any remaining clump with your pink little mits.
3. Dump 8 quarts of coir (or Coir/verm) into the mixing tub. nah Heres what a quart of coir should look like. I don't pack it but I do fill it and shake it gently to settle.
You should have pulled a jar out of each bucket of coir as part of step 0
yyyep. Its a lot of coir.
4. Shake it just as you would a new born baby.
Still true, but pretend the tub in this gif is a bucket
5. Pour the contents of the
mixing tub buckets---which now should both contain half a brick of coir (Minus 1 quart each) plus two quarts of spawn each. (total of four qts of spawn), well shaken--each into the
monotub. Modified shoebox? Ez dial Shoe-box? Whatever the fuck you want to call it is fine by me 
6. Now for the tile float. I use this to level and compress the substrate. I like this one as the length happens to be the exact width of the tub.
Take your time. Do a good job. Don't pack with all your might, just be firm and pay special attention to the edges. I find that if I pack the edges well, I don't get sidepins at all and I don't need a liner. I see a lot of new growers skipping this step and go into their grow with a choppy looking loose substrate. This is a mistake. It will invariably cause inconsistencies in your surface conditions and make for a shitty pinset. Pits and low spots tend to pool water which causes myc-mat and matted myc just won't pin for shit, and besides, its ugly.
7. Pseudo casing time.
This technique was deveoped by Stipe-n Cap and has many benefits I won't get into but you should read his tek and you should pseudocase all your grows. I add
two more one quarts of coir on top of the leveled and compressed substrate and spread it out as best I can with my hand.
8. Level and compress again with the tile float. Same as before. Make it pretty. Don't leave coir all stuck to the sides of the tub. Do it like you actually like yourself.
Thats it. Your very own ez dial Beefy Tub.
I don't use micropore. Yes I do, but apparently only in the winter when the furnace dries my place out to nose-bleed conditions I just set it and forget it until its time to monitor surface conditions. If you're not familiar with that concept you need to
read about it. I don't allow the walls or the lid to drip onto my sub. You can wipe the walls dry with a paper towel if that starts to happen or shake the lid dry. No, opening your tub won't contaminate it. The spawning process isn't even close to sanitary and that entire concept needs to go away like a bad dream.
Voila.
edit 4/12/25:
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