I kinda skimmed over the posts but i dont think anyone has suggested Metro as a treatment for internal parasites, i'm not sure if its ray safe but with my discus i was quite successful in using it along with prazipro pretty much my own mix of API General Cure except i was incharge of individual dosing. With metro, treat every 24 hr and about 250mg per 10g, although i would feel comfortable doing 250 mg/10g every 12 hours since it completely disappears after 8 hours. You can also dose it in the food, although i've never done that so you'll have to research it. Also, again not sure if its ray safe but finding a food that contains Fendendazole will also work, you can dose it yourself but its risky. HTH