Its the end of March, the weather is starting to warm up (40F instead of 20F) and its time to get the greenhouse back up and running.

This year I am going to add DWC bins to the system to grow my green leafy vegetables. In order to do this I have to cover the sump tank with a floor and build a table on it where the DWC will sit. There are 3 bins with 8 cut outs each to support 3" net pots. I am starting everything from seed. I am using rock wool as the medium to grow the plants in.…