I keep all of my long tools in my 36" stand. Most of them fit nicely at the bottom. Although, that tank is going to be saltwater soon and will have a sump/fuge in the tank, so I am going to have to figure something else out. I also have a large rubbermaid container that I use for RO/DI water changes, so I normally stick stuff in there when I'm done, if its still wet. Its about 24"+ tall, so most of the stuff fits in it.
You really should try and put doors on your tanks, you would have alot more space to store stuff, and it still looks nice when the doors are closed. Put some shelving in the stands at various heights too, that way you can keep food on one shelf, and taller stuff like dechlor on another.
Feel free to post questions in the plants section if it is dealing specifically with plants, or in the general discussion for help on your tank. We will try to help as best we can
