Inexpensive bench.

When I was building the greenhouse I considered constructing benches to support the hydroponic tanks, however I decided to simply place the tanks directly on the floor. They are supported over the gravel by pressure treated planks, which are in turn supported by the frames for the walk and the walls. The cost of the lumber and the effort of constructing the benches did not seem worth the effort. Another consideration was: that any large tank would require a pretty sturdy bench, so the floor was a better option.
What I really needed was some storage space for nutrients, additives, measuring equipment and various other odds and ends. We have a number of spare storage totes, so I tested one and found it could safely hold my weight. A simple circle cut with a saber saw turned it into a support for a flood and drain system with storage capacity for supplies.

Needing nutrients I visited a local hydroponic store today only to find that there has been what I consider a huge increase in the price of General Hydroponic's nutrients. The dealer said it was their first increase since 1993, and I said "bullsh_t". I have been only doing this for two years and this is the second time he has given me that story. When compared to the last price I paid, the price increase amounts to about 25%. After spending more than four decades in a purchasing position it is a sure bet that I will be researching a less costly alternative.