Just to add... cycle with as few a fish as possible and accept that it isn't good for the fish to do it. You can lose them (although if you do water changes throughout the cycling process I don't see why this has to happen - I've never lost a fish during cycling or shortened it's lifespan).

So if you intend to get lots of Knight Gobies, cycle with one. Then when your numbers look good as a couple more, then wait a couple of weeks and add the last two.