Aquaponic update

Hello all,
been a bit quite as the spring here in Denmark has arrived and meant that any spare time went into whipping the the garden into shape.
So how fares the experimental aquaponic system?
It is doing very well, but also a bit disappointing.
Let me explain:
The Aquaponic system is doing well, plants are growing, and the fishtank is getting adequately cleaned in the process. So that is a success:

Plenty of fresh pants, enjoying the sun and nutrient-filled water. Tomatoes, Peber, Squash, Cucumber, and some strawberries (not healthy).

So why would I be a bit disappointed?
Well, in the next window I have my little tomato plant. and the plants there looks like this:

 Twice the height. And although they get perhaps ten minutes extra of sunlight, I had supposed/hoped that the aquaponic-system would have beaten this. But apperently not.

Even the new sprouts are doing better, without the fishies help.

So, not entirely satisfied with the system. But on the bright side - the tank is getting cleaned, the plants are growing adequately, and it has been a fun experiment.

All the best,
Kasper