5 Gallon Shrimp Tank Complete Guide
Five gallons is the honest sweet spot for a serious shrimp display — big enough to stabilise TDS and GH, small enough to keep a focused colour-line colony and still fit on an HDB counter. This 5 gallon shrimp tank complete guide takes you from empty glass to a thriving, breeding shrimp population in the 19-litre footprint Singapore keepers actually have space for. Gensou Aquascaping at 5 Everton Park has set up dozens of these for colour-grading enthusiasts, and the specs below are what we hand customers as a starting recipe.
Why Shrimp Colonies Suit 5 Gallons
Shrimp breed best at stable density. In 19 litres a well-fed Neocaridina colony caps around 60 adults, which is large enough for continuous breeding without overcrowding. Parameters stabilise faster than in 2 or 3 gallons, and water changes are still trivial. The footprint also lets you line up three or four 5-gallon racks for selective breeding without taking over a room.
Neocaridina or Caridina — Pick One
Neocaridina davidi (cherry, blue dream, yellow, rili) tolerate Singapore PUB tap water and ambient temperature without a chiller. Caridina cantonensis (crystal red, blue bolt, taiwan bee) need cool water (22 to 24 degrees) and soft RO water remineralised with Salty Shrimp GH+. Mixing the two ends badly — hybrid offspring, disease cross-over and unstable colour. The Caridina vs Neocaridina comparison explains the choice.
Tank Choice
A rimless 40 × 25 × 20 cm cube or low-iron glass 45 × 25 × 25 cm suits a shrimp display best. Height does not help shrimp — they live on substrate, hardscape and glass. The Aquatic Nature Nano 25, UNS 45S or ONF Flat Nano 25 all look premium. Budget tanks work equally well; shrimp care nothing about brand.
A complete 5 gallon cherry shrimp breeding setup is the simplest project in this guide: inert sand or fine gravel (avoid aquasoil for Neocaridina — it drops pH too far for optimal breeding), Chihiros C-series LED, 10 L/min sponge filter, heavy moss cover, 10 starter shrimp. Aim for GH 6 to 8, KH 3 to 5, TDS 200 to 300. Add a shrimp food twice weekly. Colony doubles every 6 to 8 weeks. See the cherry shrimp care guide for grading notes.
Substrate Decisions
For Neocaridina, use inert sand (black silica or natural river sand) to maintain PUB tap’s neutral pH. For Caridina, use active aquasoil like Fluval Stratum, ADA Amazonia II or Brightwell Shrimp Substrate — these buffer pH to 5.8 to 6.5 and soften water. Sand depth 2 to 3 cm; aquasoil depth 3 to 4 cm. Aquasoil exhausts its buffering capacity around 18 months and needs replacing.
Filtration That Does Not Kill Shrimplets
A sponge filter is mandatory. Power filter intakes, even guarded, draw in newly hatched shrimplets during water changes. A 10 L/min air-driven sponge (Hikari Sponge, Xinyou XY-2822) costs $6 and outperforms $60 canisters for shrimp. Add a pre-filter sponge over any HOB intake if you must use one. The sponge filter guide ranks specific models.
Water Parameters and Testing
Neocaridina targets: GH 6 to 8, KH 3 to 5, TDS 200 to 300, pH 6.8 to 7.5, temperature 22 to 28 degrees. Caridina targets: GH 4 to 6, KH 0 to 2, TDS 100 to 150, pH 5.8 to 6.5, temperature 20 to 24 degrees. A TDS pen ($15 on Shopee) is the single most useful tool in shrimp keeping — read our TDS for shrimp keepers article.
Plants That Shrimp Love
Mosses are essential — Christmas moss, Java moss or flame moss provide grazing surface and shrimplet hiding. Add Bucephalandra for mid-ground texture, Anubias nana petite for hardscape attachment, and one floater like Amazon frogbit for shade and nitrate uptake. Avoid CO2 injection — shrimp dislike the pH swings. The best plants for shrimp tank article lists more options.
Chiller Need for Caridina in Singapore
Caridina cantonensis hobbyists in Singapore absolutely need a chiller. The HS-28A, Resun CL-85 or Hailea HC-100A all drop 19 litres to 22 degrees reliably. Budget $350 to $600 for the chiller plus power costs of $12 to $20 monthly. Neocaridina keepers skip the chiller entirely. Our aquarium chiller guide compares models.
Cycling and Introduction
Cycle for a minimum of 4 weeks before adding shrimp. Dose ammonia to 2 ppm, wait until ammonia and nitrite both hit zero in 24 hours. Drip-acclimate new shrimp over 90 minutes — faster acclimation causes shock deaths that appear 3 days later. Do not add shrimp to a freshly set aquasoil tank for 6 weeks; ammonia leach continues.
Feeding and Maintenance Rhythm
Feed shrimp food 2 to 3 times weekly — BorneoWild, Shrimp King, Mosura, or simply blanched spinach. Remove uneaten food after 2 hours. Weekly 15 to 20 percent water change (not more — shrimp dislike large parameter swings). Top up evaporation with RO or distilled water, not tap, to keep TDS stable.
Costs and Local Sources
Full Neocaridina setup: $120 to $200. Caridina setup with chiller: $600 to $900. Starter shrimp — 10 cherry shrimp $20, 10 blue dream $50, 10 crystal red grade B $80, 10 blue bolt $150. Singapore shrimp breeders on Carousell and the Shrimp Enthusiast Singapore Facebook group sell better stock than most LFS.
Related Reading
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Still Have Questions About Your Tank?
Drop by Gensou Aquascaping — most walk-in questions get answered in under 10 minutes by someone who has set up hundreds of tanks.
5 Everton Park #01-34B, Singapore 080005 · Open daily 11am – 8pm
