I have been trying the system for a while now, and it seems like everything is working as expected. The water level is kept at a steady temperature, and it does not seem to heat up anymore. Hurray for that!
The outdoor plants are making nice strawberries right now, however the snails thought the same thing and started chewing on them as soon as they turn red. I had to remove a LOT of small snails every morning, hopefully that won't be a bit of an issue later on. I do have to mention that they are currently producing the new batch that will be used in my hydroponics system, hopefully it wield more success than the last batch I had in there. One of the things that I do notice and most likely need to be changed in a future version is that the pump works best if its a peristaltic pump (the one that is used for pumping food liquids etc). This pump is a bit noisy and I am not sure how long it will take before the system will eventually grind to a halt. When the clay pellets seems to get wet due to the water vapor they start to dispense a very fine dust. The transparant pipes seem to have gotten a bit brown, but as long as the system keeps pumping I am not replacing it with something else.