Shrinking powder is researched in the Alchemy Lab

In addition, shrinking powder will allow another 10% per level to fit in the storehouse.  Little Empire Mojo A level 1 storehouse with level 1 shrinking powder will therefore fit 110,000 of each resource, while a level 9 storehouse with level 9 shrinking powder will fit 900,000 + (90% of 900,000 = 810,000) = 1,710,000 of each. (If you get nothing else out of playing this game,  buy kingdoms of camelot gems  you'll at least get really good at basic math.)

Shrinking powder is researched in the Alchemy Lab. After you build one, it's third from the bottom in the technology list.

Tip 3 - Keep Your Gold Low in Kingdoms of Camelot Facebook
Gold is the only thing that you can't protect. cheap kingdoms of camelot gems  Even so, there are ways to keep too much from being stolen.

First, set up your tax rate for a net income somewhere in the low double digits. You want it above zero, but not by much. Gold comes from your population and pays for two things: knights and Alchemy Lab research. At present while Kingdoms of Camelot is in beta, knights will actually work for free, but this will not always be the case, so it's good to get in the habit of making sure they're paid. cheap kingdoms of camelot gems  As the knights level, they demand more pay; as you build more cottages or upgrade existing ones, your population goes up and gives you more gold; you will periodically have to adjust the tax rate in response.