SOP for Treating Cloudy Eye in Predator Fish

#🐟 SOP for Treating Cloudy Eye in Predator Fish

Status: 🔴 Emergency Treatment

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#💡 Basic Understanding: Why Does "Salt Only" Often Fail?

Many hobbyists only sprinkle salt when fish develop cloudy eye. In tanks with high stocking density, this method often fails due to two critical factors:

1. Ammonia Continues to Rise Despite Fasting: Approximately 80%–90% of ammonia is not excreted through feces, but is discharged directly by the fish through the gills during respiration. Without daily water changes, the fish's eyes will continue to be "burned" by concentrated ammonia.

2. Medication vs. Salt Characteristics:

   • Salt does not evaporate; the dosage only needs to be replaced according to the volume of water removed during a Water Change (WC).
   • Medications (AmGuard & StressGuard) decompose and finish reacting within 24 hours. Therefore, medication must be redosed based on the full tank capacity every day after a WC, not just following the volume of the new water.

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#🛠️ Crisis Tools & Materials

• Aquarium Salt (3 Phawn / Glucosalt): Maintains osmotic function and reduces stress.

• Seachem AmGuard: Instantly binds toxic ammonia into a safe form without killing beneficial bacteria in mechanical/biological filters.

• Seachem StressGuard: A mild antiseptic that binds to proteins on eye wounds (acting like a liquid bandage).

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#📋 Daily Execution Protocol (Choose Based on Tank Volume)

#📌 Option A: For 100 Liter Tank Capacity

DAY 1: Crisis Phase (Water Reset & Therapy Start)

• Water Change (WC) 60%: Drain 60L of water and siphon all waste from the tank bottom.

• Aquarium Salt: Add 200 grams (dissolve in a separate container first, pour gradually morning and evening).

• Seachem AmGuard: Pour 2.5 ml directly into the filter flow area.

• Seachem StressGuard: Pour 13 ml to maximize coating of the eye wound.

• Environmental Conditions: Turn off aquarium lights completely and fast the fish.

DAY 2 - DAY 6: Routine Maintenance (Daily)

• Water Change (WC) 30%: Drain 30L of water and siphon bottom waste daily at the same time.

• New Salt: Add only 60 grams (only to replace salt lost in the new water).

• Seachem AmGuard: Redose 2.5 ml (back to full 100L dosage).

• Seachem StressGuard: Redose 13 ml (back to full 100L dosage as the daily active ingredients have been depleted).

• Environmental Conditions: Lights remain OFF and fish remain fasting.

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#📌 Option B: For 300 Liter Tank Capacity

DAY 1: Crisis Phase (Water Reset & Therapy Start)

• Water Change (WC) 60%: Drain 180L of water and siphon all waste from the tank bottom.

• Aquarium Salt: Add 600 grams (dissolve in a separate container, divide into several pouring sessions).

• Seachem AmGuard: Pour 7.5 ml directly into the tank.

• Seachem StressGuard: Pour 39 ml directly into the tank.

• Environmental Conditions: Turn off aquarium lights completely and fast the fish.

DAY 2 - DAY 6: Routine Maintenance (Daily)

• Water Change (WC) 30%: Drain 90L of water and siphon bottom waste daily at the same time.

• New Salt: Add only 180 grams (to maintain salinity stability in new water).

• Seachem AmGuard: Redose 7.5 ml (full 300L tank capacity dosage).

• Seachem StressGuard: Redose 39 ml (full 300L tank capacity dosage).

• Environmental Conditions: Lights remain OFF and fish remain fasting.

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#🚫 What to Avoid During Treatment

• Do not use additional Water Stabilizers: Products like AmGuard already automatically remove chlorine/chloramine. Adding other stabilizers (such as Mayin brand) will only make the water too chemically dense.

• Do not pour Starter Bacteria on Days 1–6: Starter bacteria will be wasted due to the daily WC ritual. Save starter bacteria to be added post-recovery (after treatment is finished and a large 50% WC is performed).

• Avoid direct 50% WC every day: Draining half the water every day triggers acute osmotic stress and parameter swings (pH & temperature) which can worsen the immune system of an already weakened fish. Simply follow the 30% WC rhythm after the initial reset.

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#🔄 Recovery Phase (Post Day 6)

If the eye membrane has returned to clear and normal:

1. Perform a 50% WC to wash out and dilute residual medication and salt accumulation.

2. Completely stop the use of AmGuard and StressGuard.

3. Pour Starter Bacteria back in at normal dosage to re-optimize biological filter performance.

4. Fish can begin to be fed gradually (small portions first).

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This SOP document is specifically calibrated for handling predator fish in high-density populations.

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