| | Re: Toxic ammonia levels in new setup
I doubt that the Fugnus Cure will help. That product is intended to treat parasitic fungi on fish. The fungus on your wood is a very different organism.
From the one photo of part of your tank, it looks like it would not be too difficult to remove the wood and do a throrough cleaning of it. Hydrogen peroxide would be good, or a 5% bleach solution. If you use the bleach, rinse the wood very well, and let it soak in water with a double dose of declorinater before you put it back.