Were it me,, I might remove the wood and boil it for 30 to 40 minutes.
Would stop adding liquid ammonia (if this is being done) and add more plant's and maybe four or five small tetra like fish per 20 gallons.
Would run light's for six to eight hours tops.
Lot's of plant's will consume ammonia but if more ammonia is being introduced than plant's can uptake,then algae and lot's of it could be result.
Lot's of plant's could also use up ammonia created by a very few small fish and tank would mature slowly and you could add another few small fish depending on tank's volume every ten to fourteen day's.
Would feed fish once evry day or two until the tank was a few month's old.
Just my two cent's.