I'm surprised it's taking so long to process the ammonium considering you added bottled bacteria and seeded with the sponge. When i used turbostart 900 I added 2 lightning maroons same day and never showed ammonia on red sea test kit and one of the clowns is still with me today (the other jumped because the female is a bully). I had nitrites and nitrates on day 2 and the nitrites zeroed out by 2 weeks in. Never once seen ammonia and my ammonia badge never showed a reading in the tank. Maybe try dosing a different bacteria if it's taking too long. Although patience is key lol.