More Benefits of Quarantine

1. Protects your display tank: Stops outbreaks before they start.
2. Makes medication affordable: Smaller volume = accurate, cheaper dosing.
3. Improves monitoring: Bare-bottom tanks reveal waste, lesions, or parasites quickly.
4. Saves time & stress: Isolated treatment is faster and avoids biofilter crashes.

Stocking Essential Medications

Every aquarist should keep a core set of trusted treatments ready for quarantine use: Fish Mox (Amoxicillin), Fish Flox (Ciprofloxacin), Fish Doxy (Doxycycline), Fish Zithro (Azithromycin), Fish Flex (Cephalexin), Fish Cin (Clindamycin), Fish Pen (Penicillin), Fish Sulfa, Fish Zole (Metronidazole), Fish Flucon (Fluconazole).

Core Equipment

• 10–20 gallon bare-bottom glass tank.
• Heater & thermometer for stable temps.
• Sponge filter for gentle biofiltration and aeration.
• Air stone to maximize oxygenation during dosing of Fish Flox (Ciprofloxacin) or other meds.
  
• Secure lid to prevent jumping or evaporation.
• Dim adjustable light for observation.

Dedicated Tools

Always keep tools separate from your main display:

• Nets labeled “QT Only.”
• Dedicated siphon and buckets.
• Water conditioner, test kit, and dosing syringes.

1. Rinse the tank and equipment thoroughly—no soap.
2. Fill with dechlorinated water, matching display tank temperature and pH.
3. Install heater, sponge filter, and air stone.
4. Seed sponge filter with beneficial bacteria (from established tank or bottled starter).
5. Add simple hiding structures like PVC elbows for comfort.
6. Test water parameters: Ammonia 0, Nitrite 0, Nitrate under 20 ppm.

Drip Acclimation

1. Float fish bag for 10–15 minutes to match temperature.
2. Start slow drip from quarantine tank into bag/bucket (2–4 drops/sec).
3. After 30–45 minutes, net fish into quarantine. Never pour bag water into tank.

Common Signs of Bacterial Illness

• Red streaks in fins or body.
• Open sores or ulcers.
• Bulging eyes (popeye).
• Ragged fins and lethargy.

If confirmed, treatments may include Fish Mox (Amoxicillin) for broad-spectrum coverage, or Fish Doxy (Doxycycline) for more resistant infections.

Recommended Duration

A standard preventive quarantine lasts 2–4 weeks. This window allows hidden infections to show themselves before new stock enters the display tank. During this time, observe carefully for fin rot, flashing, white spots, or lethargy.

Optional Preventive Protocols

Some aquarists apply a “medication trio” — a combination of parasite, antibacterial, and supportive treatments — during new fish quarantine. While optional, this can reduce risks. If applied, stick to trusted aquarium antibiotics such as:

• Fish Mox (Amoxicillin) for broad-spectrum bacterial coverage.
• Fish Doxy (Doxycycline) for suspected resistant infections.
• Fish Flox (Ciprofloxacin) for gram-negative bacteria.

Calculating Water Volume

Use the formula: (Length × Width × Height of water in inches) ÷ 231 = Gallons. Subtract 10–15% for PVC hides or other décor.

Example Dosages (Always Follow Label Instructions)

• Fish Mox (Amoxicillin): Often dosed daily for 7–10 days.
• Fish Flox (Ciprofloxacin): Commonly renewed daily with water changes.
• Fish Doxy (Doxycycline): Typically 5–7 days per course.

Each medication has specific instructions — never generalize. Misuse increases antibiotic resistance and reduces effectiveness.

Daily Targets

• Ammonia: 0 ppm (detoxify immediately if detected).
• Nitrite: 0 ppm.
• Nitrate: Under 20 ppm.
• Temperature: Stable, species-appropriate.
• pH: Consistent within 0.2 daily swing.

Filtration and Aeration Rules

• Remove carbon/chemical media — these strip medications like Fish Zole (Metronidazole).
• Use sponge filters only — gentle, reliable, and easy to clean.
• Increase aeration with air stones when using Fish Zithro (Azithromycin) or other oxygen-demanding meds.

Administration Routes

• Medicated Food: Best for internal infections if fish are eating. Use Fish Doxycycline or Fish Zithro (Azithromycin).
• Bath Treatments: Effective for external sores or fin rot. Often paired with Fish Flox (Ciprofloxacin).
• Dips: Short, high-concentration exposures for resistant localized infections, e.g., Fish Zole (Metronidazole).

When to Use Each

Medicated food is less stressful but depends on appetite. Bath and dip treatments bypass appetite but require precise water measurements to avoid overdosing.

Feeding Guidelines

• Offer small, digestible meals 2–3 times per day.
• Soak food in dissolved antibiotics like Fish Mox (when label allows).
• Supplement with vitamin-rich foods or garlic extract for immunity and appetite stimulation.
• Remove uneaten food promptly to keep water clean.

If the Fish Won’t Eat

Switch to bath or dip treatments until appetite recovers. Appetite loss itself may be a sign of internal infection requiring stronger action with Fish Doxy or Fish Zithro.

Daily Log Template

Date:
Temp:   pH:   Ammonia:   Nitrite:   Nitrate:
Medication & Dosage:
Feeding Response:
Behavior Notes:
Lesions/Fins/Eyes:
Water Change %:
Next Action:

Why It Matters

Consistency is the key. If you see fin edges improving by Day 3 while using Fish Mox (Amoxicillin), you know the treatment is on track. If behavior declines after switching to Fish Flox (Ciprofloxacin), you can reconsider quickly before losing time.

Environmental Adjustments

• Keep lights dim — sudden brightness shocks sick fish.
• Cover 2–3 sides of the tank to create a secure space.
• Use PVC pipes or clay pots for hiding spots.
• Maintain stable temperatures — no swings of more than 1°F daily.

Minimal Handling

Avoid netting unless absolutely necessary. Handle gently with soft nets or containers if you must move fish. Every netting event raises cortisol, delaying healing.

Signs of Improvement

• Lesions stop spreading, fins look cleaner.
• Appetite returning.
• Breathing rate slowing to normal.

Red Flags

• No visible improvement after 5 days of Fish Mox.
• Worsening redness or swelling despite treatment.
• Loss of appetite continues beyond 48 hours.

In such cases, switching to Fish Flox (Ciprofloxacin) or Fish Doxycycline may be necessary depending on the suspected bacteria type.

Completion Checklist

• Continue antibiotics for the full labeled duration, even if fish appear healthy.
• After last dose, perform a 40–50% water change.
• Run activated carbon for 24–48 hours to remove residual meds.
• Begin supportive feeding with probiotics and vitamin supplements.

Example

A goldfish treated with Fish Mox (Amoxicillin) for fin rot looked healed after Day 5. The aquarist completed the full 10-day course, preventing relapse and saving the fish from future resistant infections.

Reset Steps

• Vacuum the bare bottom to remove uneaten medicated food.
• Perform deep cleaning of sponge filter and replace media if needed.
• Run activated carbon to remove any medication traces.
• Test water daily for one week to ensure ammonia/nitrite remain zero.

Medication Storage

Store unused meds in cool, dry areas. Rotate stock and check expiration dates. FishMox.us offers fresh supplies of all major fish antibiotics so your hospital tank is always ready for emergencies.

Typical Timelines

• Sick fish: At least 10–14 days after symptoms resolve.
• New arrivals: Minimum 4 weeks of symptom-free observation.

Exit Checklist

• No new lesions, sores, or fin damage for 7+ days.
• Stable appetite and normal activity.
• Water parameters remain steady under normal feeding.
• No signs of relapse after completing a course of Fish Mox or Fish Doxycycline.

Golden Rules

• Wash hands thoroughly after working in QT before touching your display tank.
• Label all QT equipment — buckets, nets, siphons — and never reuse in display.
• Keep towels, sponges, and test kits separate.
• If space allows, set QT at least a few feet from the display to avoid splashes.

Key Differences

• Use larger QT tanks (20–40 gallons) for marine species to reduce stress.
• Maintain stable salinity with refractometer checks daily.
• Protein skimmers can strip meds like Fish Zithro (Azithromycin) — run air stones instead.
• Marine parasites (Cryptocaryon, Amyloodinium) may require copper — monitor carefully.

Marine-Safe Antibiotics

Products like Fish Zole (Metronidazole) and Fish Doxycycline are often chosen for internal marine infections, as they remain stable in saltwater for several hours.

Essential Medications

• Fish Mox (Amoxicillin)
• Fish Flox (Ciprofloxacin)
• Fish Doxycycline
• Fish Zithro (Azithromycin)
• Fish Zole (Metronidazole)

Tools & Supplies

• Sponge filter & air pump.
• Dechlorinator (Seachem Prime or equivalent).
• Thermometer & heater.
• pH, ammonia, nitrite, nitrate test kits.
• Dedicated nets, buckets, and siphons.

Quarantine Success Checklist

• ✅ Set up a dedicated 10–20 gallon hospital tank.
• ✅ Always quarantine new fish for 4 weeks.
• ✅ Stock essential meds: Fish Mox, Fish Flox, Fish Doxy.
• ✅ Log daily water quality and fish behavior.
• ✅ Maintain ammonia & nitrite at 0 ppm with sponge filter and water changes.
• ✅ Complete full medication courses — never stop early.
• ✅ Disinfect and reset QT after each use.