Welcome to the forum PF

. You'll find lots of information here and plenty of people to help you with getting started.
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I was planning to connect it to my Eheim 1046 pump with the following specs:
Pump output: 300 l/h; 66 lmp. gal./h.; 79 U.S. gal./h.
Delivery head: 1,20 m/wat.col.; 3 ft. 11 in./wat.col.
if it is enough? And connect the pump to a electrical on/off switch.
Your column would have to be very short for this pump to work (It can only pump the water to 1.2 meters over the water level of the tank it is in). Even if you made very short columns the pump would not deliver much water since the volume of water pumped decreases as the head height increases. Take a look at this link for your pump and you'll get the idea -
http://hw-lab.com/summary-of-eheim-universal-pumps.htmlQuote:
Is there any charts how much plants/volume of water within plant area that I would need for X amount of fishes?
There isn't a chart but there is a guideline for this which isn't written in stone. I don't know if it would apply to column culture because it all depends on whether all the media is in contact with the water. Here's a good link to get you started -
http://www.backyardaquaponics.com/forum/viewtopic.php?f=12&t=6646Quote:
Is it possible to grow without artificial light, especially in the nordic winter?
In Winter, if you can grow houseplants on the window sill then you can probably grow non-blooming plants like lettuce. Plants that have to bloom for you to have a crop won't do well in your Winters. I think supplemental lighting would really be a good idea because you won't get much growth in Winter without it.
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What do you guys/girls think of the vertical system? I find it practical because it takes less space and looks kinda cool
Looks neat but I would like to see the plant tubes able to rotate so that the plants can face the window where the light is (while still being able to easily harvest).