In my personal expereince with all Palys and Polyps, I had a huge Algea Bryopsis outbreak and I needed to get rid of it, I started to Dose Kents Kent M casue they say Tech M get rid of this stuff so I did and over a month of using good Husbandry and doing water changes every other week and plucking off the Byropsis my tank started to turn around, I know I dose Tech M everyday 60ML of it until the Bryopsis went away and stop growing, since then my Algae problems went away and low and behold My Zoanthids and Palys Blew up and started to grow at a high rate. So I thought wow this is awesome I am seeing great growth from all my coral. ( I dose Kent Tech M every Day at 60ML measure and Pour I never tested because at that point is didn't care if my system crashed to get rid of the Algae).
Since then I have been dosing Tech M every other day and my Polyps and Zoanthids are as happy as can Be. I am not saying this will work for everyone but it's working for me to keep them colored up and happy. I have 2 seperate systems and I have done this on both. I am still dosing it in both systems and soon I am going to stop dosing it to see if Tech M has the special juice to keep corals Zoanthids alive so far they have keep them alive as long as I have been dosing it and growing. Just thought I share this experience