I think the algae may be some of the problem also. I would add some trace with amino acids to the tank until the algae is under control if you plan on growing any type of coral. I also do not think you will get your nutrients ( P04 & N03 ) up with the amount of algae in the tank.I’m not sure if this has anything to do with it but info have a lot of green algae in the tank and could that be why they are not pulsing?
Probably happens !
“So let it be written, so let it be done”