Who Gives A Fish Forums

Sounds like Hexamita, a common parasite in Discus. Your setup seems solid, but I'd recommend adding Metroplex to the food. Also, bump up the temp to 86°F for a week. What's your nitrate level? High nitrates can weaken their immune system.


Thanks for the advice. Nitrates are around 20 ppm ...

I had the same issue last year. Tried upping the temp and adding garlic to their food, but it didn't cut it. Ended up using API General Cure, and the holes healed in about two weeks. How old are your fish? Younger Discus seem more prone to this.

I switched from a HOB to a canister last year and honestly, the difference wasn't huge. The HOB was easier to clean, too. Unless you're planning to heavily stock the tank, I'd stick with what you've got.

Gravel's sketchy for Discus, man. Traps way too much gunk unless you're vacuuming daily. I switched to pool filter sand after my last batch got fin rot, and it's been smooth sailing. Tank's at 82°F, weekly 40% changes, and I dose with Seachem Flourish for the Amazon swords.