🦐 How to Set Up a Freshwater Shrimp Tank

Dwarf shrimp like cherry shrimp are among the most fascinating low-maintenance pets you can keep in a small space, but the rule that matters most is that their tank must be fully cycled and stable before they ever go in. Shrimp are sensitive little creatures, and a clean, settled tank is the difference between a thriving colony and a struggling one. Get the water right and you will be rewarded with a busy, colorful colony that grazes, breeds, and quietly does its own thing.

Tank size

You do not need a big setup. A small nano tank of even 5-10 gallons is plenty for a whole colony of dwarf shrimp. It is cheap to fill and easy to plant, too — just remember that less water swings faster, so keep the routine steady. Cherry shrimp are hardy beginner shrimp, and in stable water they breed readily. Watching a handful of shrimp grow into a bustling colony is half the fun.

Cycle first, keep it stable

Because shrimp are so sensitive, the tank must be cycled and stable before they go in, with no ammonia spikes. Once shrimp are living there, keep the water parameters steady and avoid big swings, since sudden changes stress them more than almost anything else. That is why you should change water slowly and in small amounts rather than doing large, sudden water changes that can shock the colony.

Filter and plants

Use a sponge filter. It keeps the water clean without sucking up shrimp or their tiny babies, and as a bonus it grows a layer of biofilm that shrimp love to graze on. Fill the tank with plenty of live plants and moss, which give shrimp cover to feel safe, more surfaces to graze, and hiding spots for babies. A well-planted shrimp tank almost runs itself.

Feeding

Shrimp mostly feed themselves by grazing biofilm and algae, but you can offer a little extra: a small pinch of shrimp food or algae pellets and the occasional piece of blanched vegetable. Feed sparingly, only what they finish in a couple of hours, since leftover food fouls the very water they depend on. A lightly fed, well-planted tank keeps shrimp healthiest.

Tankmates and the three big rules

Shrimp are peaceful and are best kept with tiny fish or no fish at all, because many fish happily eat baby shrimp. Peaceful aquatic snails make great companions. Beyond that, remember the three big rules: never use products containing copper, since many fish medications do and copper is toxic to shrimp; always change water slowly and gently; and give them minerals to build a shell with, since a shrimp makes a whole new one at every molt. If your tap water is very soft, test the GH and aim for about 7–9, or add a shrimp mineral. Follow those three and you have avoided the mistakes that trip up most beginners.

Quick setup checklist

• Fully cycled, stable nano tank (5-10 gallons is plenty)
• Sponge filter that will not suck up shrimp or babies
• Lots of live plants and moss for cover and grazing
• Light feeding of shrimp or algae food plus the odd blanched veggie
• No copper, ever
• Minerals for healthy molts — test the GH and aim for about 7–9
• Small, slow water changes; tiny or no fish as tankmates

Shrimp make a wonderful entry into the hobby, so if you want more calm, easy companions, browse our low-maintenance pets guide, or take our free pet quiz to find your best match.

🛒 Recommended supplies

Hand-picked gear for this guide. Affiliate links — we may earn a commission. The $/$$/$$$ badges are a rough budget guide, not live prices.

🧽 Cleaning & maintenance

The main job is regular water changes. Each week, use a gravel vacuum (siphon) to remove about 20–30% of the water along with waste from the bottom, then refill with fresh water treated with a dechlorinator so it is safe. Scrape algae off the glass as needed and rinse the filter media in old tank water — never tap water, which kills the good bacteria. Test the water so you can catch problems early. Never do a full strip-down that wipes out the filter bacteria; steady partial maintenance keeps the water stable and your shrimp healthy.

Cleaning supplies for this habitat. Affiliate links — we may earn a commission. The $/$$/$$$ badges are a rough budget guide, not live prices.

⚠️ Common shrimp setup mistakes

Already have one and something feels off? Start here. These catch almost everybody — none of them mean you have done badly, and every one of them is fixable.

Why did all my shrimp die after I added new plants?

The mistake: Putting shop-bought plants straight into the tank.

Many aquarium plants are grown outdoors and treated with pesticides, or dipped in a snail-killing solution before sale. The residue can wipe out an entire colony within hours, and rinsing does not help because the plant has already taken it up inside.

Try this: Quarantine new plants in a bucket for at least five days first: dechlorinated water, a water conditioner that binds heavy metals, and a full water change every day. Then rinse and plant them. It is a slow step, but it is the one that saves colonies.

Is snail killer or algae treatment safe for shrimp?

The mistake: Dosing a snail or algae treatment.

Snail killers, algaecides and some plant fertilisers contain copper even when the label never uses the word, and shrimp die at doses a fish would not notice. Copper also soaks into decor and silicone, so the tank can stay unsafe long after the treatment is gone.

Try this: Read the full ingredient list and only use products marked invertebrate-safe or shrimp-safe. For a snail bloom, feed less and lift them out on a blanched lettuce leaf left in overnight. If a fish needs medicating, move the fish to a separate tank and keep its net and bucket away from the shrimp.

How do I add new shrimp to my tank?

The mistake: Tipping new shrimp straight into the tank.

Shrimp cannot handle a sudden change in water chemistry the way fish can. Going from bag water to tank water in one step causes a shock that shows up as failed molts or deaths over the next day or two, often after the shrimp looked fine at first.

Try this: Float the sealed bag to match the temperature, then drip tank water into a cup holding the shrimp for one to two hours, until the water in the cup has doubled or tripled. Net the shrimp into the tank and tip the old bag water down the sink.

My tank is cycled, so why are my shrimp dying?

The mistake: Adding shrimp to a spotless brand-new tank.

A tank can pass a cycling test and still be too new for shrimp. They live on biofilm, the faintly slimy layer that takes weeks to grow on plants and wood, and a sparkling clean tank has almost nothing in it for them to graze on.

Try this: Let the tank run planted and cycled for four to six weeks before the shrimp move in. A piece of driftwood or a couple of Indian almond leaves speeds the biofilm along, and it is worth leaving the glass at the back and the decor unscrubbed.

Can I use tap water in a shrimp tank?

The mistake: Topping up with untreated tap water.

Chlorine and chloramine kill shrimp quickly, and tap water that has been sitting in household pipes overnight can pick up copper as well. Small top-ups feel too minor to bother treating, which is exactly why they catch people out.

Try this: Treat every drop with a dechlorinator, even a cup to replace evaporation, and run the cold tap for half a minute before filling the bucket. Match the temperature to the tank and add it slowly.

❓ Common questions

📚 Where this comes from

We check our care advice against vets, animal charities, and government health guidance. Here is what this page is built on.

Vets, charities & official guidance

• Choosing an aquarium for pet fish — RSPCA
• Aquarium water quality and cycling — RSPCA Australia

Keeper & species-community guides

• GH for shrimp: calcium, magnesium, molting — ShrimpKeepers
• Dwarf shrimp and molting problems — Shrimp and Snail Breeder
• Freshwater shrimps FAQ — Practical Fishkeeping

Checked August 2026. These are other people’s websites, and none of it replaces your own vet — if a pet seems unwell, call one.