General Step for All Acclimations
Before starting any acclimation, test the water parameters (pH, GH, KH) of both the tank water and the water the aquatic animals arrived in.
- For shipped animals, it’s not unusual for the transport water to have ammonia—handle with care.
🐟 Fish Acclimation
Method 1: Floating Bag Acclimation
- Test pH, GH, KH of tank water and fish transport water.
- Float the sealed fish bag (non-breather) in the tank for 20–30 minutes to equalize temperature.
- Open the bag, roll down the edge or clip it so it floats upright.
- Add 1–2 tablespoons of tank water every 5–10 minutes into the bag for 45–60 minutes to slowly adjust water chemistry.
- Using a net, gently transfer fish into the tank—avoid adding transport water.
- Discard all transport water.
Method 2: Drip Acclimation
- Test pH, GH, KH of tank water and fish transport water.
- Remove the unopened fish bag from transport and place it in the room to allow the water temperature to gradually reach room temperature. You can place a thermometer on the bag to monitor the temperature.
- Gently place fish into a clean container.
- In the container, set up a drip system from tank to container using airline tubing tied in a loose knot or a valve to create a drip.
- Adjust drip to about 2–4 drips per second and continue for 1–2 hours, doubling or tripling the water volume.
- Gently transfer fish into the tank using a net.
- Discard all transport water.
🦐 Shrimp Acclimation
Method: Drip Acclimation Only
Shrimp are sensitive to changes in water chemistry; drip acclimation is safest.
- Remove the unopened shrimp fish breather bag from transport and place it in the room to allow the water temperature to gradually reach room temperature. You can place a thermometer on the bag to monitor the temperature.
- Test pH, GH, KH of tank water and shrimp transport water.
- Gently place shrimp into a clean container.
- In the container, set up a drip system from tank to container as described in fish drip acclimation.
- Adjust drip to about 2–4 drips per second and continue for 1–2 hours, doubling or tripling the water volume.
- Gently transfer shrimp into the tank using a fine mesh net.
- Discard all transport water.
🐌 Snail Acclimation (Nerite, Mystery, Ramshorn, etc.)
Method: Gradual Water Addition Acclimation
Snails are more tolerant than shrimp but still require careful acclimation to prevent osmotic shock or inactivity.
- Test pH, GH, KH of your tank and the snail’s transport water (if bagged, otherwise place snails in tank water in a container).
- Add 1–2 tablespoons of tank water every 5–10 minutes to the container holding the snails for 45–60 minutes.
- Once the snails become active, remove them by hand (or use gloves/tweezers) and place them into the tank. In some cases, it may take a while for snails to “wake up.” Continue to keep snails in an aerated container until you see activity.
- Discard all transport water.
Note: It’s not unusual for snails to have some residue or film inside their transport container.