[Hydroponics] Lettuce has root rot! Trying to revive it & urgent environmental improvement

I was growing lettuce and small tomatoes outdoors in a hydroponic system made of PVC pipes.
After a few days of moving the whole system indoors, the vegetables seemed to be somewhat listless.

I had a bad feeling, so I checked the roots and found that it had root rot.
It looked like kelp in miso soup.
I heard that once a plant has root rot, you can’t get it back, but I thought I could cut off the rotten part and revive it by using a method like cuttings.
I would also like to solve the problems caused by moving the plant indoors, such as lack of sunlight, lack of oxygen in the water, and the development of water moss.
To watch the video, click on the link below.

Here you go.

Cutting the roots of rotten lettuce and small tomatoes with scissors

I started to cut the rotten part of the lettuce with scissors.
In the photo above, I was too scared to cut the rotten root, but I heard that there is no possibility of curing root rot, so I cut the entire rotten part.

The roots of the small tomatoes weren’t as bad as the lettuce, but they did look rotten in places.
I cut off the suspicious parts with scissors.

I wrapped the cut lettuce in a sponge to keep it from falling over and set it in a bucket so that the cut ends and stems were immersed in water with liquid fertilizer.
Hopefully, new roots will grow…
As for the lettuce, I’ll give it a few days to see how it does.
I cut off the rotten roots of the tomatoes and put them back in the multi-stage hydroponic system made of PVC pipes in the room.
I’ll keep an eye on them for a few days.

The roots of the lettuce did not recover, and I gave up on the small tomatoes.

It was a disappointing result.
As for the lettuce, five or six short and thin roots grew from the part that was soaked in water, but the growth of the roots was slow, so the lettuce itself wilted due to the lack of water.
The mini-tomatoes were grown in a multi-stage system, but upon closer examination, since we were circulating water and growing other vegetables at the same time, the rotten roots might have an adverse effect on the entire water supply.
In order to avoid the total destruction of the vegetables, we also removed the small tomatoes.
As a result, it was tough to revive the roots of the vegetables that had suffered from root rot at this stage…unfortunately.

Environmental improvement #1: Supplying oxygen to the water with an air pump

Someone somewhere told me that circulating water makes the water move, which in turn makes it easier for oxygen to reach the water.
I was relieved by that, but it resulted in the root rot that happened.
So I would like to use an air pump for the aquarium, air tubes, and air stones to force oxygen into the tank.
I chose one that looks a little stronger than the others because I expect the water volume to increase with the increase of PVC pipes in the future.


All you have to do is connect the air pump, air tube, and air stone, put the stone in the tank, and plug it in.
The water should now be highly oxygenated.

Environmental improvement #2: Install LED lighting to eliminate the lack of sunlight

I installed one LED light about a meter long on the ceiling.

It is simple to use, just plug it into a household outlet.
After I moved the hydroponics equipment indoors, I was only using soft indoor lighting, so I think the light quantity was not enough.
To be honest, it seems that one LED light is not enough, so I plan to purchase more in the future.

Environmental improvement #3: Covering the water storage tank with a leisure sheet to prevent moss growth

I covered the water storage tank with a light-shielding leisure sheet because I heard that direct light on the circulating water causes moss to form.
I think it would be better to shade the holes in the PVC pipes that don’t have seedlings on them yet, as well as the water supply hose connected to the pumping pump, but I haven’t recovered from the shock of the root rot yet, so I’d like to do it sometime (sometime)

I modified part of the lid of the water storage tank to allow me to run the drain hose, water supply hose, air tube, and power supply.

The top photo is a pipe saw (saw) for PVC pipes, and the bottom is a saw for woodworking.


Growing small tomatoes, all-purpose leeks, basil, and strawberries in an improved hydroponic system

I was not able to revive the lettuce and small tomatoes with root rot.
I don’t know at this stage what was the worst, but in the improved environment, I have been growing mini-tomatoes from cuttings, all-purpose green onions that I bought from the supermarket and left only the roots, basil and strawberries that I got from Home Depot.
The seedlings from Home Depot are sold in pots with soil, so I wash off the soil outside, leave the roots alone, and grow them in PVC tubes.
Water is essential for hydroponics, but we didn’t have a sprinkler (outdoor water supply) at home, so I had a friend lay one for me at a reasonable price.

There are a lot of incidents that can happen.
I feel the greatness of my predecessors who are successfully doing hydroponics.
I would like to study them so that I can be as close as possible to their success.
The lettuce has gone root rot, so the salad has disappeared from our table…