Name: Paracitrol Fish Medicine 120ml – Anti Parasitic Treatment for Aquarium Fish
Brand: Paracitrol
SKU: PARACITROL-120
Availability: InStock
Rating: 4.44 (16 reviews)

Question 1

What does Paracitrol treat and what is it not effective against?

Accepted Answer

Paracitrol is a broad-spectrum anti-parasitic treatment targeting external and some internal parasitic infections in freshwater fish. Conditions it effectively treats include white spot disease (ich — Ichthyophthirius multifiliis), velvet disease (Oodinium), gill flukes (Dactylogyrus), body flukes (Gyrodactylus), fish lice (Argulus), anchor worm (Lernaea), Costia (Ichthyobodo) and Chilodonella. It is not effective against bacterial infections (use Bactonil for fin rot, ulcers, pop-eye), fungal infections (Saprolegnia cotton growth — use an anti-fungal), or viral conditions. Correct identification of the disease type before purchasing and treating is the most impactful single action in fish disease management.

Question 2

Why do I need to complete the full treatment course for ich?

Accepted Answer

Ich (Ichthyophthirius) has three lifecycle stages with different medication sensitivity. The trophont stage lives embedded in the fish's skin — medication cannot reach it. The tomont stage encysts on the substrate and tank walls — medication cannot penetrate the cyst. Only the theront stage (the free-swimming infective juvenile) is vulnerable to medication. A full treatment course ensures that all tomont cysts present when treatment began have completed their lifecycle and released theronts — which are then killed by the ongoing medication in the water. Stopping treatment early allows any remaining encysted tomonts to complete their lifecycle and reinfest the fish after the medication concentration drops.

Question 3

Why does raising the temperature help treat ich?

Accepted Answer

Temperature directly controls the speed of the ich lifecycle. At 24°C, the full lifecycle from trophont to tomont to theront takes 5–7 days. At 28–30°C, the same cycle completes in 1–3 days. Raising temperature compresses the lifecycle so that all existing tomont cysts complete their development and release theronts within a shorter treatment window — ensuring the medication is at effective concentration when all generations pass through the medication-sensitive theront stage. At lower temperatures, a treatment course would need to extend to 2–3 weeks to catch all lifecycle generations. Keep aeration high when raising temperature — dissolved oxygen decreases as water temperature increases.

Question 4

My fish has both white spots (ich) and ragged fins (fin rot) — what do I use?

Accepted Answer

Concurrent parasitic and bacterial infection occurs, particularly in stressed fish or following an ich outbreak where secondary bacterial infections develop at the site of ich attachment. The safest approach: treat the most immediately life-threatening condition first (ich is typically faster-acting), then follow with bacterial treatment after the parasitic course is complete and a post-treatment water change has been done. Do not combine Paracitrol and Bactonil in the same water simultaneously without veterinary guidance — drug interactions in medicated tanks can be unpredictable. Quarantine any visibly infected fish in a hospital tank if possible for more precise, economical treatment.

Question 5

Can I use Paracitrol in a tank with snails or shrimp?

Accepted Answer

No — anti-parasitic treatments including Paracitrol are harmful to invertebrates. Freshwater shrimp (Neocaridina, Caridina, Amano), snails, crayfish and crabs must be removed to a separate container of untreated tank water before beginning any Paracitrol treatment course. Do not return invertebrates to the tank until the full treatment course is complete, a large post-treatment water change has been performed, and activated carbon has been running in the filter for at least 24–48 hours to adsorb residual medication. Treating in a hospital tank (without invertebrates) is the best approach if you cannot safely remove all invertebrates from the main tank.

Question 6

How do I prevent ich and other parasites from entering my aquarium?

Accepted Answer

The vast majority of ich and velvet outbreaks in established aquariums are introduced via new fish that appear healthy but carry subclinical parasite loads. The single most effective prevention: quarantine all new fish for a minimum of 2–4 weeks in a separate dedicated quarantine tank before introducing to established aquariums. Never add bag water from a fish shop to your aquarium — the water often contains ich theronts or other parasites. Disinfect nets and equipment between tanks — parasites can be transferred on wet equipment. Maintain excellent water quality — fish with compromised immune systems from ammonia, temperature fluctuations or crowding are significantly more susceptible to parasitic infection.

Question 7

Can I use Paracitrol to treat goldfish with ich?

Accepted Answer

Paracitrol can be used to treat goldfish with ich, but the temperature protocol is different. Goldfish are cold-water fish that should not be treated at 28–30°C — the elevated temperature used for tropical fish ich treatment would stress or kill goldfish. For goldfish ich treatment, maintain water temperature at 22–24°C (the upper comfortable range for goldfish) and extend the treatment course to a minimum of 14–21 days to account for the slower lifecycle at lower temperatures. Increase the frequency of water changes and re-dosing to maintain consistent medication concentration throughout the extended treatment period.

Question 8

After I finish the Paracitrol course, what should I do?

Accepted Answer

Post-treatment protocol: perform a large 40–50% water change to dilute and remove residual medication from the tank water. Return activated carbon to the filter — activated carbon will adsorb any remaining medication efficiently. Add a beneficial bacteria supplement or probiotic to help rebuild the biological filter, which is affected by anti-parasitic treatment. Monitor ammonia and nitrite levels daily for 1–2 weeks post-treatment — the biological filter may need time to recover. Feed lightly for 1–2 weeks to reduce the ammonia load on a partially compromised filter. If possible, observe fish for 1–2 weeks after treatment completion to confirm that the parasitic infection has been fully eliminated before considering the tank clear.

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