In this video, I’m going to show you how to make a mini Kratky system for growing lettuce. I logged the entire progress which took about 5 weeks. Depending on which variety of lettuce you’re growing, it may take more or less time. Below is the nutrient mix I used in this video.
I got the seeds from Jim Conner. He grew the same lettuce recently and it was much more massive. Please see link to his video below.
Jim Conner: https://www.youtube.com/watch?v=Y6SxHmNeOH0
My Indoor Setup: https://plus.google.com/118382364204627409312/posts/5Cr9CWGsoDG
Hydroponic Nutrients(Masterblend):
1 Gallon of water, pH is between 5.9 – 6.5
3 Grams of Masterblend 4-18-38
3 Grams Calcium Nitrate
2 Gram of Epsom Salt
Video Rating: / 5
Great idea! We are really loading up our new grow tent! Thanks Khang!
This looks lovely! 🙂 How come there's enough oxygen in water for the whole process ? A lot of hydroponic setups (just like this one) include air pump to oxygenate water and I'm wondering how come this one doesn't need air pump ?
What did you call those cups, and where can you buy them?
What is that in the container that you are putting the seeds into….looks like some kind of sponge or something?
Great video! How long do you keep the plants under the lights? What is your lighting set up? Is it costly? Thank you for your kindness.
Great! Have you ever tied distilled water instead of 5.5-6.5?
no pump?
how many layers of paint? should it be where no light at all can come thru when looking from the inside? or is a small amount bleeding thru when held up to the light ok?
thanks for this video. very cool. what is the growth medium you used to start the seedlings? you mentioned it was something someone made for you. but i didnt catch what it was called.
Does your ph change from time to time? I always check mine every mine and its constantly changing. I dont know if its bad to use ph down often
what type of drill is that?
when you prune is it enough to just cut the other plant stem? or do you have to actually pull the entire root stem out of the rockwool? also, when at the seedling stage, do you have to spray the rockwool with water in the first 2 weeks, or should the dome/ziploc bag keep the moisture?
Great video. want to start growing herbs. don't have room but grow indoors. Do you use a fish air blower?
Have you used a metal container like from peanuts ?
hi, how about your nutrient mix? i heard among some youtube videos that there is constantly need to check the content of the mix because overtime the water evaporates and the nutrient mix becomes more saturated and that way it can damage plants. is this true? how is your experience about this? again my question to greenhouse is this type of hydro system (without pump) ok to use in a greenhouse (i live in mid Europe but the temperature can raise in greenhouse to 40-50 °C (100-120°F) during hottest days. many thanks for your answer
awesome
Do you use your regular water formula when watering seeds to start? I saw on one video that nutrients can burn the seed.
What kind of lighting do you use?
Explained very nicely and simply. Thank you. Great Job.
why did you have to paint it black