I agree that it is a common and durable practice. Just not one that a hobby aquaculturist could easily do in their basement or workshop. Key word being easy.
For arguments sake, say you had a 300 gallon galvanized stock tank that was previously in use for 10 months, and you needed to epoxy paint the inside for use for aquaculture. What would it cost to prep the tank according to ASTM D6386? Once the tank was prepped, how long of an interval would be acceptable before the epoxy was painted on? For instance, could Cecil do the prep work correctly at his house?
It's really irrelavent from my personal experience. Even though I got two 300 gallon tanks via bartering, by the time i bought the epoxy and did the acid etching and applied the epoxy,it would have been cheaper to just purchase a plastic stock tank. In my case I located a supplier of plastic tanks with minor defects and got by even cheaper.
Another downside to galvanized stock tanks was the ribbing tends to collect solids.
If pigs could fly bacon would be harder to come by and there would be a lot of damaged trees.
