Way cool Gunner. I did have one caution though for folks looking for plants. The pothos that you used looks very similar, almost identical, to a variegated philodendron that we have. The philodendron will also grow non-terrestially, I believe that it is the plants preference, but the issue with them is that there are many different varieties and many of them create nectars that are irritants to some and poisonous to many pets. What effect they would have on fish I couldn't speak to but the idea is that you only use the pothos plant when you can obtain it from a source where it is labeled. Don't rely on a visual I.D. unless you're a botanist or someone who really knows his stuff.
I'll try to get a pic later to better illustrate what I'm rambling about.
Its a different sub species your talking about that im not using with calcium oxalates which have to be eaten in large quantities. calcium oxalates also reside in beef and the main health issue is the development of stones in the bladder. In fact calcium oxalates is in my hard water as well that my fish swim in. As long as you don't make flake out of it I don't see a problem. But becasue of this AZ does have the highest incidence of kidney stones and why I don't drink the water and Ion exchange most of it out for my fish. The trade off is Nitrates which is definitely a poison.