So, here we are at last
After years of planning and dreaming, we've finally got some progress on the greenhouse.
Here's what's planned:
It's a steel portal framed 15m x 5m structure set into a ground beam foundation. Not shown in the picture are the glass and fibre-cement cladding details. I'm using tempered 5mm glass for the left (Eastern) 12 meters. For the 3 meter bit on the right between the doors, the roof will be tiled with fiber cement (slate lookalike) tiles.
Here's an old (quite incorrect) external view. It shows the cladded versus glass sections well, but the door's in the wrong position and some other details are out too.
The greenhouse will be connected to the main 10000 liter tank in the house by these pipes:
Which pop out again over here:
Here's another view of the pipes, showing the greenhouse foundation nicely:
The rightmost big blue tub is my 1000 litre sump. The tank and most of the tubs will drain into it. The white thing arcing into the air is my 25mm electricity conduit. Under it you can see the orange polycop for water.
Here are some of my extra culture vessels and spare bits and pieces:
very true, it was the left over from when we excavated "die Groot Dam" 
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