Help! I have no idea what im doing.

Sorry... Damsels are mean when they get old and cranky. The are territorial and, soon, they decide the entire world is their territory!
There are damsels that are peaceful. You just need to do more research on them.
I'm still experimenting with filtration. I'll get yelled at for this, but when my ta ks are getting ugly, I still have the best luck with a HOB (Yes, on a reef tank) and/or a canister aio alternative to a sump. The tank with a sump is just aggravating me, especially in the heat!
Not yelling at you but this is harder than having a sump.
I think the dinos are what you are calling the purple algae. Believe it or not, you don't want those parameters you listed before to be that close to zero. Too much nitrate, hair and bubble algae chokes out the tank (red and blue legged hermit crabs took care of hair, emerald crabs take care of bubble) too few nitrates and dinos choke out everything...

Keep in mind, this hobby really is fun!!!!
Purple algae(coraline or cyanobacteria) is completly different than dinoflagellates. Dino is brown not purple.
 
I got new rocka in and there's tons of new caves. I tried to do a fallen cliff look on the sides, like what I saw in turks and caicos. I think the fish are on the way now and should be here today or tommorow.
 

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