The first thing is that 2 weeks of ammonia treatment in the tank to cycle probably wasn't long enough. The bb break down the ammonia, and they really can't live unless they have food (disclaimer -not a scientist
maybe the words used here could be better but I imagine you get the idea)
It most always takes 5-6 weeks - approximate depends on tank temps and pH, etc.
If the water is almost shimmery and so cloudy it kinda looks like milky water, then I would think bacteria bloom.
Not the kind of BB you need for breaking down ammonia for the nitrogen cycle. Similar process but different bacteria type.
Make sure you keep up monitoring your ammonia (can spike with the Bbloom), Nitrite and Nitrate in case your cycling wasn't quite finished yet.
Just still don't change the filter pads. The BBloom will go away with out changing the water in a few to about 21 days. (providing the water parameters are safe for fish.
What are the water parameters right now?
You can do some serious gravel vacuuming to help get any excess organics out of the substrate.
Do you have Prime?
To summerize: If you clean the substrate well and the parameters are in a safe level you can just wait and moniter the parameters on a daily basis, and reduce feeding amounts as well. They cycle will continue and your bbloom will go away.
Another thing that is helpful would be to increase aeration. This can be done with an additional air pump, or turning it up if you have an adjustable one. Or if you have a hang on the back (HOB) filter, you can lower the level of the water in the tank a couple inches and make sure that the filter is set to the higher + level, so more water goes through causing more aeration. You can reduce the level after the bloom dissipates.