Forget Stability or adding all bio media, building a sump, or anything else.
WC as mentioned.
Even if you don`t care about the fish you are using for your cycle, you still need them alive to complete the cycle.
WC to get ammonia/nitrite as close to 0 as you can.
Understand, a fish in unhealthy conditions can lead to a disease outbreak that will really add to your grief.
If you want to try Stability or any other Bacteria Starter product, cool..
But do the WC to protect what you have.
Once through the cycle, then you can play with filtration.
