A pretty sad update.
I have treated my tank 3 times for flatworms but unfortunately I still have them. Even though the FWE is killing some of them after a day or two they just seem to come back harder.
On top of the flatworms I also have dinos which is taking over my tank. I have tried a blackout period for 72hrs but it never got rid of the dinos. It never made it worse but I couldn't see a huge difference.
Anyway I am going to speak to my LFS
and see if I can get credit for my coral and CUC. I am going to start over. I will empty the tank and clean everything before starting again.
Question is what is the best way to clean my rock/sand? If it's easier buying new sand isn't a problem.
Another question is how long do you think I should leave it to ensure the flat worms don't come back? I am assuming they can't live or hatch out of water?
It's pretty frustrating! I wouldn't be bothered so much if I had been neglecting the tank but that's not the case. I have been doing water changes and testing water religiously. Hopefully it was just a string of bad luck and I will have more success when I start again