Still trying to decide how, and how big I want to go for my fish tank. Guessing 20 gallons which seems to be a good minimum for the fish being happy. Of course, those numbers may or may not end up being adjustable friending how well the garden half works. I figure if I go with tomatoes or peppers I could have a nice continuous harvest of fresh ingredients. I’d consider herbs, but out garden its already overgrown with everything but basil.
Now, in the interest of science, I’m shady considering what else should be going in the tank. Temperature is easy and obvious. Water height would be a good idea. How about acidity, dissolved oxygen, something more. I’ll have to get looking into how to do some of those on the cheap. Possibly some type of conductivity and capacitance test could give me the numbers for what I want.
Than its an issue of style. Style matters. What I’m thinking of is stripping down circuit boards, mounting electronics, and then potting everything in clear acrylic. I’d have to make sure everything off gases for awhile and check for change in thickness. I really don’t think the fish, nor myself, want to be eating some heavy metals.