How to set up a shrimp tank, step by step
A shrimp tank is mostly patience. The gear is simple and fairly cheap, but the order you do things in, and how long you wait between steps, decides whether the first shrimp settle in or quietly disappear. This guide walks through a typical setup from an empty tank to your first shrimp, with links to the deeper guides for each step.
1. Pick your shrimp first
Everything else follows from this choice, because the two main groups of dwarf shrimp want different water.
- Neocaridina (red cherry, blue dream, yellow, orange and other color forms) are hardy and do well in moderately hard water. Hobby references commonly cite about 6–8 dGH, 2–6 dKH and pH 6.5–8, and dechlorinated tap water often works. This is the usual first shrimp.
- Caridina (crystal red, Taiwan bee and similar) want soft, slightly acidic water, usually remineralized RO water on an active soil. They are less forgiving and best as a second tank.
Our Caridina vs Neocaridina guide compares the two in detail. The rest of this guide assumes Neocaridina unless it says otherwise.
2. What you need
| Item | What works for most shrimp tanks | More detail |
|---|---|---|
| Tank | About 5–10 gallons or more. Shrimp can live in less, but more water buffers swings in temperature and chemistry. | Stocking |
| Filter | An air-driven sponge filter, or any filter with the intake covered by a fine sponge so shrimplets can't be pulled in. | Filters, air pumps |
| Substrate | Inert gravel or sand for Neocaridina. An active soil that buffers pH down for Caridina. | Substrate |
| Plants | A moss, an epiphyte such as Java fern or Anubias, and a floating plant. All grow in low light without CO2. | Plants |
| Light | A basic LED on a timer is enough for easy plants. | Algae |
| Heater | Only if the room drops well below the low 70s °F or swings day to night. Use an adjustable heater sized for the tank. | Heaters |
| Lid | A lid or cover glass. Shrimp sometimes climb out, especially in a new tank. | |
| Water care | A dechlorinator, a GH/KH test, an ammonia and nitrite test, and ideally a TDS meter. | Test kits |
Skip copper-based medications, plant products that aren't labeled shrimp-safe, and anything sold as an algaecide or pest treatment. See shrimp-safe fertilizer for what to watch on labels.
3. Set up the tank
- Place it well. Pick a sturdy, level spot out of direct sun and away from heaters, vents and drafts. Sun and heat swings are a common cause of algae and temperature trouble.
- Rinse and add substrate. Rinse gravel or sand until the water runs clear. Active soils are usually not rinsed, so follow the maker's directions.
- Add hardscape and plants. Tie mosses and epiphytes to rock or wood rather than burying their rhizomes. Rinse or quarantine plants from other tanks so you don't bring in snails, hydra or planaria, or pick tissue-culture cups.
- Fill slowly. Pour onto a plate or bag so the substrate stays put. Treat tap water with a dechlorinator that also handles chloramine, or use remineralized RO water for Caridina.
- Start the equipment. Run the sponge filter around the clock, and set the light to a modest daily period on a timer.
4. Check your water
Before you cycle, test what's in the tank so you know whether your water suits the shrimp you picked. For cherry shrimp, many keepers find tap water works once it's dechlorinated, as long as GH, KH and pH fall in the usual range and the water isn't extremely soft or hard. Our can shrimp live in tap water? guide covers what to look for, and GH and KH explained and TDS explained cover the numbers. For Caridina, see remineralizing RO water.
5. Cycle the tank, then wait a little longer
Shrimp are very sensitive to ammonia and nitrite, so the tank needs a full colony of beneficial bacteria before any go in. A fishless cycle commonly takes around four to eight weeks, and longer with some active soils. When ammonia and nitrite both read 0 and nitrate is low and stable for several days, the tank is cycled. Step-by-step instructions are in how to cycle a shrimp tank.
Cycled isn't quite the same as ready. Many shrimp keepers wait a few more weeks so biofilm and a little algae build up on the glass, plants and hardscape, because that film is what shrimp graze on all day. A spotless new tank is a common reason a first group fails to thrive.
6. Buy and acclimate the shrimp
- How many: around 10 is a common starting group for a tank of 5 gallons or more, which gives good odds of both males and females. See how many cherry shrimp per gallon.
- Where from: local breeders and shops whose water is close to yours make the move easier. Ask what GH, KH and TDS the shrimp are kept in.
- Acclimate slowly: drip tank water into the bag water over an hour or more so the shrimp adjust gradually, then net them in without adding the shipping water. See how to drip acclimate shrimp.
- Tank mates: most fish will eat shrimplets and many will eat adults. A shrimp-only tank is the simplest start. See cherry shrimp tank mates.
7. The first month
| When | What to do |
|---|---|
| First days | Expect shrimp to hide and some to look pale. Feed very little or nothing for the first day or two. Keep the lights and the room steady. |
| Weeks 1–4 | Feed a small amount every day or two and remove leftovers within a few hours. Test ammonia and nitrite weekly while the tank settles. |
| Ongoing | Make small water changes with water matched in temperature, GH and TDS, and top off evaporation with plain dechlorinated or RO water. See shrimp tank water changes and best shrimp food. |
A few losses in the first weeks are common with new shrimp, especially after shipping. A steady stream of deaths, or shrimp dying mid-molt, means something in the water needs checking. Start with why are my shrimp dying? and shrimp dying after molting.
Track it
A new tank is where records help most. The free Cycling Checklist printable walks through the cycle week by week, and the Water Parameter Log keeps GH, KH, TDS, temperature and test results on one page once the shrimp are in, so you can see drift before the shrimp react.
Frequently asked questions
What do I need to set up a shrimp tank?
A tank of about 5–10 gallons or more, an air-driven sponge filter or a filter with a sponge-covered intake, substrate, easy plants or moss, a lid, a dechlorinator and test kits for GH, KH, ammonia and nitrite. A heater is only needed if the room gets cool or swings.
How long do I need to wait before adding shrimp to a new tank?
Until the tank is fully cycled, which commonly takes four to eight weeks. Many shrimp keepers then wait a few more weeks so biofilm and algae build up for the shrimp to graze.
Can I set up a shrimp tank with tap water?
Often, for cherry shrimp and other Neocaridina, as long as you use a dechlorinator that handles chloramine and your GH, KH and pH fall in a suitable range. Caridina such as crystal reds usually need remineralized RO water.
Do shrimp tanks need a heater?
Not always. Cherry shrimp are widely kept without a heater in rooms that stay in the low 70s °F year-round. Use one if the room gets cold or the temperature swings between day and night.
How many shrimp should I start with?
About 10 is a common starting group in a tank of 5 gallons or more, because it gives good odds of having both males and females.
Do I need a special substrate for shrimp?
Not for cherry shrimp: inert gravel or sand works well. Caridina are usually kept on an active soil that lowers pH and buffers the water.
Sources: Shrimp Tank Hub's cherry shrimp care, cycling, substrate, filter and Caridina vs Neocaridina guides and their references; hobby breeder references and recurring owner reports (r/shrimptank, 2024–2026).