Update:
Hello guys, well, after 3 weeks of dosing regularly TSP and a cup full of frozen foods+nori+reefbooster 3x a week the colors are better than ever, my CAPs have that intense red and all acroporas are full of colors, I can say the TSP really helped the corals to regain their intensity on the colors.
I couldn't get the phosphates higher than 0.03, but I believe the value is fine if the colors are back, I didn't want to rise them any higher than that also, I tried dosing this amout of tsp, the colors came back and I am happy, so no need to rise them more.
NO3 are stuck at 5ppm and I think I can maintain these 2 parameters like this forever since it's been 3 long weeks and no changes on the PO4/NO3.
I will try to upload some before and after pictures.
Thank you guys for all the help.