To answer your twice-asked question. Stresscoat and AmmoLock both treat ammonia the same way as does Prime. It locks it up so it's not dangerous to your stock and releases it slowly over a day or so. Use one or the other. I would double dose with water changes and dose a half-dose daily until the cycle is complete. Prime is more often used because, being concentrated, it's less expensive per dose.
As Jaycee suggests, be more concerned for your fish and less for the cycle. Please, change as much water as needed, as often as required, to keep ammonia and/or nitrite below 1.0ppm. That's still high, but you're using an ammonia-locker, so your fish are protected.
All above applies to the 30g, as well.