Basic Hempy bucket instruction (there are other methods but this is directly from hempy himself)
1. Need a bucket anywhere from 2.5 gallon to 5 gallon works well (do not want holes already cut into it)
2. Measure 2 inches up from bottom of bucket and drill one hole 3/8 to 1/2 in size (dont necessarily have to drill it can use an old drill bit and heat it up with a flame and push it though works also)
3. Figure out what you want you use for your bottom layer e.g. chunky perlite, hydroton, larger river rock, etc (anything ph neutral and large enough not to clog drain hole will work)
4. Fill bucket to about an inch or two above drain hole with your bottom layer medium
5. Hempy says mix perlite and vermiculite in a 3:1 ratio (every 3 parts perlite add 1 part vermiculite)(Also easier to work with the perlite and minimizes dust if you prewet it, mix in a seperate container)
6. Add your per/verm mix to the bucket (I like to have it about an inch below the rim incase i add water to fast it doesnt over flow, and allows me to use the rim as a tie down point for lst)
7. Water thoroughly in tub (Not part of hempys guide i like to do it to help rid of extra dust from perlite and bottom layer medium)
8. Plant rooted clone or seedling in center of mix
9. Hempy says to start feeding full strength nutes according to phase on bottle but i recommend just plain ph'd water for the first couple weeks as the cotyledons have the nutes it needs to start off with.
10. For young plants water daily to every other day depending on need (basically watch for beginning signs of under watering, i watered everyday for the fist 2 weeks) pH water to 6.3 according to Hempy I like to pH around 6
11. Once roots hit the rez you will notice an explosion of growth, by then you should be able to water every 2-3 days
Side notes from my experience:
When you do start adding nutes start with 1/4 strength of recommended on bottle for a few days to see how it reacts then bump up to 1/2 strength again watching reaction i would wait at least a week before bumping up to 3/4 and full strength.
If you decide to plant rooted clone/seedling in a larger bucket it will take some time before you notice significant growth as the roots need to establish themselves in the large container first
Find a solid object that you can place under the bucket to elevate it so you can add a easy to remove drip pan for draining runoff (Size of object depends on vertical space you have)
Most people dont check the ppm or the ph of the run off with hempy bucket as you will constantly be adding in ph'd water/feed, i check the ph occasionally but dont do anything about it as my girl seems happy as it is. for me the occasional check it to make sure nothing is happening inside that i should be worried about. As long as it stays the same number its good to go.
The only downside to this method is hand watering, but if you dont have the patience to do that you shouldnt be growing in the first place as growing is a waiting/observation game
My hempy bucket mix:
Bottom layer: 3 inches of red lava rock
Middle layer: 2 inches of hydroton (help prevent per/verm mix going down to rez)
Top layer: 8 inches of 3:1 perlite/vermiculite