Abstract: I decided to clean the bucket and change the solution anyway. I also switched back to the full spectrum LEDs.

I've changed the lights back to the full spectrum LEDs, since the 90W's of white LEDs gave off to much heat.

I taped some aluminium foil to the document file folder after I removed the mechanism with my dremle.

I have also cleaned the bucket end everything, even my medium to hold all the roots in the net pot. I cleaned it with hot water and 12% hydrogen peroxide cream (for dying hair, but I guess it should also work as a cleaning agent).

Then I taped the bucket with aluminium foil so very little light would get into the bucket. I also glued down the air stone, so it would be under the roots all the time and wouldn't move.

I added 2 litres (about 0.53 gallons) of water, then I mixed in (5ml of) HESI TNT Complex fertilizer (NPK is 3 2 3). It's supposed to be for soil only (they also make a separate one for hydroponics) but this is what I have by hand. I also added HESI Super Vit (one drop) which has some vitamins to help with the growth, together with (2.5ml of) BIOBIZZ ROOTJUICE root stimulator.

I also started a time lapse of the growth. The program is called webcam time lapse and I like using it. You can make a video form the photos inside the same program so that's nice too, since it's freeware. Download link

Once again, I'm ending this post with an inspiring quote, I think that I'll just write it at the end of every log, without announcing it. :D

Start by doing what's necessary; then do what's possible; and suddenly you are doing the impossible.
Francis of Assisi