Shrimp Tank Setup: A Beginner's Guide to Cherry Shrimp

Tank size: 5-10 gallons is ideal for a beginner shrimp tank. Larger volumes are more stable, but shrimp have such a small bioload that a 10-gallon tank can support 50-100 shrimp without filtration strain. A 5-gallon works but leaves less room for error on water quality.

Filter: Use a sponge filter. It is the right filter for shrimp for two reasons. First, sponge filters cannot suck up shrimp or shrimp babies (shrimplets are tiny enough to get pulled into HOB and canister filter intakes). Second, the gentle flow rate is appropriate for shrimp, which prefer low-flow environments. Run the sponge filter with a small air pump and air line tubing.

If you already own an HOB filter, you can use it with a pre-filter sponge covering the intake. But purpose-built sponge filters are simpler and cheaper for a shrimp-only tank.

Heater: Cherry shrimp do well at 65-75°F and do not need a heater if your home stays in that range. They prefer cooler water than most tropical fish. Avoid running them above 78°F, where oxygen levels drop and metabolism stress increases. If your home drops below 65°F in winter, a small adjustable heater set to 70°F is worthwhile.

Lighting: Any moderate light works. Shrimp do not have special lighting requirements. If you plan to keep live plants (recommended), use a light appropriate for the plants.

Cherry shrimp are tolerant but not bulletproof. The parameters that matter most:

Temperature: 65-75°F. They survive outside this range but thrive within it.

pH: 7.0-7.8. Stable pH within this range is more important than hitting a specific number. Avoid tanks where pH swings more than 0.5 points over the course of a day.

GH (general hardness): 6-8 dGH. Cherry shrimp need minerals, particularly calcium and magnesium, for molting successfully. Soft water below 4 dGH causes failed molts, where shrimp get stuck in their old shell and die. If your tap water is very soft, use SaltyShrimp GH/KH+ or Seachem Equilibrium to bring GH up to the target range.

KH (carbonate hardness): 2-4 dKH. Enough to buffer pH stability without going too hard.

Ammonia and nitrite: 0 ppm, always. Shrimp have zero tolerance for ammonia or nitrite. Do not add shrimp to an uncycled tank, and never skip water changes long enough for nitrates to climb above 20 ppm.

Nitrates: Below 20 ppm. Shrimp start showing stress at 20-30 ppm and die off above 40 ppm. This is much lower than the 40 ppm threshold for most fish.

Copper: Zero. Copper is lethal to shrimp at concentrations that are safe for fish. Check the ingredient label on any medication, fertilizer, or tap water treatment you plan to use in a shrimp tank. Some tap water also contains trace copper from old pipes. If you suspect this, use a water conditioner that binds heavy metals.

Test your water with the API GH and KH test kit (separate from the master kit) before adding shrimp. Know your parameters.

Substrate: Shrimp spend most of their time on the substrate grazing on biofilm and algae. They prefer fine-grain substrate over large gravel because it provides more surface area for biofilm growth. Dark substrates (black sand, dark planted substrate) make cherry shrimp display their red coloration more vividly. They tend to pale out on white or light sand.

Fluval Plant and Shrimp Stratum is a popular choice for shrimp tanks. It supports plant growth, buffers toward the right pH, and has a texture shrimp graze on readily. Plain inert black sand is a cheaper option that works well.

Plants: Live plants are highly recommended for shrimp tanks. They absorb nitrates and ammonia, provide grazing surfaces covered in biofilm, and give shrimp somewhere to hide during the vulnerable molting period. Shrimp that just molted are soft-bodied and helpless for several hours. Cover lets them hide until their new shell hardens.

Java moss is especially useful. Shrimp constantly pick through its fine strands for food, and shrimplets hide in it effectively. Anchor it to driftwood or rocks. Other good options: anubias (attach to hardscape), water wisteria (fast-growing, absorbs nutrients), floating plants like frogbit (provides shade and biofilm on roots).

Hides and hardscape: Shrimp also use caves, hollow driftwood, and gaps in rocks as molt hiding spots. Even a few small stones arranged to create gaps is enough. Indian almond leaves on the substrate break down slowly and provide grazing surfaces, tannins that keep shrimp comfortable, and another micro-habitat layer.

Feeding: Shrimp in a tank with live plants and established biofilm often need very little supplemental feeding. In a mature tank, they graze continuously on algae, biofilm, and decomposing plant matter. Overfeeding is a more common problem than underfeeding. Uneaten food spikes ammonia and crashes parameters.

Feed a small amount 2-3 times per week, not daily. Use shrimp-specific foods (Hikari Shrimp Cuisine, GlasGarten Shrimp Baby Food, or similar) for complete nutrition. Blanched vegetables (zucchini, spinach, cucumber) are accepted and provide variety. Remove any uneaten food after 2-3 hours.

Water changes: Do smaller, more frequent changes than you would for fish. 10-15% weekly rather than 25-30%. Large water changes cause sudden parameter shifts that shrimp cannot handle as well as fish. Always match temperature and treat with dechlorinator before adding new water. Pour new water in slowly or use a drip method, especially if your tap water parameters differ significantly from the tank.

What to avoid: No copper-based medications or fertilizers. No fish medications in general unless labeled shrimp-safe. No aggressive tank mates. Most fish will eat shrimp, especially shrimplets. If you want tank mates, limit to small, non-predatory species: small rasboras (chili rasboras work well), otocinclus, or nerite snails.

Signs the tank is thriving: Shrimp grazing actively and in the open, females carrying eggs (a green or yellow cluster under their tails), shrimplets visible in moss and plant roots, and visible population growth over several months.