Reissue patents can be used to correct errors such as failure to perfect claims for priority (e.g., failure to properly claim a priority filing date of an earlier filed foreign or U.S. patent application), defects in the drawings or specification, improper inventorship, and claiming more or less than what was proper to claim in the original patent.
There are a lot of ways you can be frugal in your garden and save some money. The potting mix you use in your container gardens should be something you feel comfortable splurging on. In my opinion, the best potting soil for edible container garden is the Happy Frog line of potting soil distributed by FoxFarm.
While some species can tolerate a wider range of soil pH, most worms do best when pH is near neutral. I'd still stick with the perlite. Decaying worms are not a good addition to ones cannabis garden. With the addition of worms, you need to keep the either the worms happy, or the plant happy.