taily talk is about Ich/White Spot, the most popular marine disease

=== What is Ich? ===
Ich or White Spot disease came from parasite name Cryptocaryon, It's attached in and out skin, eyes and everywhere. You will see your fish got white spot all around.

=== How to prevent Ich ===
The best way is Quarantine Tank, Set it up to quarantine new fish before let it in main tank. Normally, you have to quarantine new fish about 1 month.
If you can't setup Quarantine Tank, You can order new fish and let the merchant keep it for you a month. This give the shop do quarantine instead of you.
Don't buy very new fish that just arrive to shop, let it rest for a couple weeks. If it has disease, it will show up. So, you will don't get risk.

=== How to cure Ich ===
1. Bring it out and Use copper (and maybe yellow powder)
Copper: Cupramine Seachem https://tailybuddy.com/product/2253/
OF Yellow Powder https://tailybuddy.com/product/4342/

2. Bring it out and do Hyposalinity

3. If you can't bring it out, use Polyp Lab Reef Safe Medic in you tank
https://tailybuddy.com/product/4430/

4. Use UV Sterilizer/ Ozone, It will reduce parasites

5. additional method
Change water 10% everyday, reduce parasites
Gain your tank temperature to about 28-29c
mix garlic with fish food to gain immunity.
https://tailybuddy.com/product/1619/