How to acclimate freshwater shrimps 

Estimated reading time: 5 minuten

Acclimating freshwater shrimps is being done when you transfer shrimps from one tank to another. For example when you picked up some shrimps at a breeder or you will transfer them at home.

Acclimating shrimps must be done on a proper way because the watervalues between different tanks can vary. By letting the shrimps acclimate to your tank you will prevent stress and posstible dying of the shrimps. Below you will find several methods to acclimate shrimps to your tank. They are ordered in the best way to do it.

Important: after your shrimps are welcomed in your new tank, please don't put the transportwater in your tank. Catch the shrimps with a net and place them in your tank. Transportwater can contain stuff you don't want in your tank.

Method 1: drip acclimation

The drip method of acclimation is the most common method to introduce aquariumwater at a controlled rate. This precision control reduces stress on your new shrimps. The method is easy to use and low in costs. You have two options: with a flow control valve or by making a knot in the tube.

Put the shrimps you want to add, lower than the aquarium where they will end up.

On the pictures is shown how we transfer shrimps by using the drip method (with flow control valve).

Optie 1: Flow control valve

You need two tubes and a flow control valve.

You attach the two hoses to the control valve so that a hose is created with a control valve in between. Put one side of the hose in the tank where the shrimp will be placed. You suck on the other side until the water comes out. Now you regulate the valve in such a way that water comes out of the hose drop by drop. Then place this end in the tank or bag with shrimp and let this drip until the tank or bag is 75% filled with aquarium water where the shrimp will enter.

Optie 2: The knot-method

A drip system can also be realized without a control valve. You do this by taking a hose and tying it in a knot (without pulling it tight). You put one side in the aquarium where the shrimp eventually enter. Now you suck in water and then it will flow out on the other side. Now tighten the knot so that water drips onto the other side of the hose. Also here applies; if the tankor bag is 75% filled with aquarium water into which the shrimps will enter, the shrimps can be transferred.

Both processes will take between 60 minutes and 3 hours (depending on the amount of water and the drip rate. The advice is to acclimate the shrimps for at least 60 minutes.

This is how it looks

Garnalen overwennen - druppelmethode 1

We have sliced an air hose into two separate pieces with a control valve in between.

Garnalen overwennen - druppelmethode 2

Our new shrimps are in the container as you can see above. You can see that we have placed the tank lower than the aquarium (below).

Garnalen overwennen - druppelmethode 3

A total picture of acclimating freshwatershrimp at

Method 2: Occasionally add water

Adding water every now and then is the most common method. With this method, you add a small amount of water from your aquariumwater to the transportwater every 15 minutes. This also results in a relatively slow acclimation. If the water consists of about 75% aquarium water, the shrimps can be transferred.

If the shrimps are in a transport bag, it is advisable to place this transport bag in the aquarium. The temperature of the transport water will then slowly equalize to the aquarium water.

Depending on the amount of transport water, this process will take approximately 60 to 90 minutes.

Method 3: don't acclimate

This is absolutely not preferable. Yet there are situations where there is no time to let the shrimps acclimate. To make this run as smoothly as possible, you can transfer shrimp in 15 minutes.

Acclimate shrimps in 15 minutes

By immediately adding approx. 25% aquarium water, the shrimps will be forced to get used to it quickly. After 10 minutes, add 50% aquarium water and let the shrimps get used to it for another 5 minutes.

It is better to use the drip method where you increase the drip speed.

No time at all?

Really no time to let the shrimps acclimate properly? Then next time you should at least scedule more time for this acclimation proces, but this comment is of no use to you now. Add 50% aquarium water to the transport water. Then wait as long as you have time and then transfer the shrimp to the new destination.

Acclimating shrimps tips

  • Preferably, dim light or switch off the aquarium lighting. This reduces stress for shrimps;
  • Discard the transport water after the shrimp have been transferred;
  • Do not do an immediately large water change, but add the maximum amount of water that has left the aquarium during the transfer (fresh new water!)

Merging groups of shrimps

Sometimes you hear stories of shrimps dying after merging with other shrimps. We have never experienced this before, so cannot confirm this. As a precaution, we treat our shrimps with a little Furanol before they are added to a new aquarium with other shrimps. Furanol is a medicine for bacterial infections. This helps prevent transmission of shrimp bacterial infections.

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