Fusion360 is a very flexible parametric CAD software. From my perspective of a SolidWorks user, it lacks its simplicity. On the other hand, it is far more affordable, free for most of us. I modeled the entire systems on the Model Workspace, that shows the tools you need for solid 3d parametric modeling. in SolidWorks, you always start from a sketch (mode) on a plane and then start extruding, generating new planes in which you will be able to sketch again. It is also very easy to maintain projects and collaborate online. The version tracking system is effective and comprehensive. I would recommend Fusion360 as the tool that I would like to have open source. A good parametric, design sharing and collaborative system for better open design. I’ve been learning a lot from this youtube channel (https://www.youtube.com/channel/UCo29kn3d9ziFUZGZ50VKvWA).
Makers productive procrastination and other home DIY demands led me to this Fish Tank feeder theme for the 3d Printing week. In the end, if some of the GROUU modules are going to be used for Aquaponics, this feeder system can become a module as well.
I ran into some similar systems in Thingiverse which I reversed in order to adapt the feeding tube and the way the entire system is used. Here is the project on Autodesk360 (https://myhub.autodesk360.com/ue2af847b/g/projects/20180429129852206/data/?tryNew=true) just ask to join, contribute or just use as you wish. All the work here is licensed under CC-BY. And here are the STL files for printing.