Red-Eared Slider Care: The Complete Guide for New Turtle Owners

What You Are Getting Into

Red-eared sliders (Trachemys scripta elegans) are the most widely sold pet turtle in the world, and among the most frequently surrendered to wildlife rehabilitation centers when owners discover what they actually require. A slider that starts as a quarter-sized hatchling sold with a plastic bowl and a dock will reach 10-12 inches as a female adult (males are slightly smaller) and live 20-40 years in proper captivity. They are not low-maintenance pets. They are interesting, long-lived animals with specific environmental requirements that must be met consistently. This guide helps you meet those requirements from day one.

Housing: Size Matters More Than Anything

A hatchling can be started in a 20-gallon tank, but plan for a 75-120 gallon setup for an adult female. Males can be kept in 55-75 gallons. The tank must have both a deep water section for swimming and a completely dry, heated basking area. Many keepers use stock tanks or large rubbermaid tubs as adults — these work extremely well and are less expensive than glass aquariums at large sizes. Browse our aquatic turtle and fish tank collection for appropriate sizing options.

Water Quality and Filtration

Sliders are messy. They defecate in the water, drop food in the water, and produce ammonia-rich waste continuously. Canister filtration rated for at least twice the tank volume is the starting point. Weekly 25-30% water changes are necessary even with strong filtration. Test water parameters with a liquid test kit weekly — zero ammonia and nitrite, nitrate below 20ppm. Shell rot and respiratory infections in sliders almost always trace back to poor water quality. Browse our aquarium water treatment collection for water conditioners, beneficial bacteria, and test kits appropriate for turtle tanks.

Diet: Omnivorous and Age-Dependent

Hatchlings and juveniles (under 2 years) are primarily carnivorous — offer commercial turtle pellets, cooked chicken, cooked fish, bloodworms, and earthworms as staples. As turtles mature, plant matter becomes increasingly important — adults should be 50-70% plant-based, with dark leafy greens (romaine, green leaf, kale) offered regularly. Calcium dusting on food 2-3 times per week prevents metabolic bone disease. Avoid feeder goldfish (thiaminase interferes with B-vitamin absorption) and iceberg lettuce (no nutritional value). Browse our reptile and turtle diet collection alongside our complete aquatics collection for everything a red-eared slider needs.