Was perusing the Memorial Day sale ad for Tractor Supply Company (TSC), and noticed a couple of 100 gallon stock tanks on sale, so figured I'd post them here (in case anyone else is interested), and ask the opinion of those who have delved into this, for suitability in aquaponics. First, a Rubbermaid structural foam stock tank (lightweight plastic), for $59.99. Second, an oval galvanized stock tank, for $69.99. Now I realize that galvanized metal and fish/plants probably don't go well together. Which means it would almost certainly require a plastic lining to make it friendlier to both fish and plants. But the superior strength of the metal, plus the only slightly higher than the plastic tank price, has me thinking it might be a better choice. This would be for an inside aquaponics set-up, sort of a trial, to see how I like the methodology, and determine the feasibility indoors (my weather gets too hot in the summer, and too cold in the winter, to allow fish to survive with anything but a DEEP pond.....and being within the confines of the city limits, I'm limited on what I can get away with building). I would likely utilize this for a flood and drain set-up, with the growing area right over (perhaps even on top of) the tank, and grow lights utilized to ensure adequate "sunlight". Thoughts?