Here is the empty container with the plexiglass, with the holes drilled:
And here is the setup, with the plexiglass spray-painted with white Krylon Fusion paint, which has adhered for over 3 years on one of the other setups, with no peeling. The only plant in it at this time was a Thai basil, from one of the other pots, so I could see if the different nutrients made a difference:
In all of these setups I use things from my aquariums to keep them circulating and clean. I have an airstone in each (normal in these), but I also have a powerhead, the kind used on undergravel filters, and I use a sponge filer on this, which gives a large surface area for the biological filter to set up. This works great, and I go for many weeks w/o changing any of the water (something I think is pushed by the nutrient manufacturers, to sell their products!). I just keep an eye on the EC and the pH...and keep harvesting!
