Dt hypo treatment

[Mike-fish]

Im aware that herbtana is an immune booster. I think I will run herbtana untill Saturday if I've seen no improvement I will begin to make preparations for the 175 to use as a hypo tank that way it's a smaller water volume to deal with and will prevent an accidental cycle. As there will be almost no rock ( wrasse sleeps in a specific rock. What would be the best thing to provide them with cover?