Fulfilled by EverythingAquatic, our trusted medication partner.
| Active Ingredients | Fenbendazole |
| Treats | Internal nematodes, planaria, hydra |
| Use In | Hospital tank, QT tank |
| Reef Safe | No |
Fenbendazole is the dewormer for things prazi misses — internal nematodes, planaria, and hydroids in a reef. It is also gentler on shrimp than most parasiticides, which makes it the go-to for hydroid outbreaks in coral tanks. Standard at FisHotel during quarantine when intake fish show worm signs, and used by reefers to wipe out hydroids in established display tanks.
Active ingredient: fenbendazole. Pairs cleanly with copper, chloroquine, or prazi without interaction. Safe for hard corals; some softies (Anthelia, Xenia, certain mushrooms) do not tolerate it and should be removed first. For exact dosing per gallon, see the Dewormers tab on our Medication Dosing Calculator — we keep the numbers in one place so they cannot drift across product pages.
Treats: intestinal nematodes (roundworms), hydroids, planaria, some flatworms.
Use in: quarantine, hospital tank, or display.
Reef safe: yes for stony corals; remove sensitive softies first.
Ready to Check Out Today
All medications sold by FisHotel are intended exclusively for ornamental aquarium fish. They are not for human consumption, not for food-producing animals, and not for use in any tank stocked with fish intended for human consumption. By proceeding, you acknowledge that you are purchasing these medications for ornamental aquarium use only, that you understand proper dosing and handling, and that you accept full responsibility for safe application.
