Good luck with your anubias!!! Well, mine is 2-3 years old and this is the first time I was able to record flowering. I read somewhere that they flower when more you add more PO4, you could try that
As for the algae, I am waiting for things to stabilize since I changed over 70% of the filter media a few days ago. The green water probably was caused by an ammonia spike from the lack of nitrifying bacteria since I accidentally used tap water on the filter media
. I would try the blackout method if everything else doesn't work since it does kill plants too and my plants are in a vulnerable state.
Well, what can I do but to wait; would try to get some otos as cleanup crew when ammonia goes down.