Best Tarantula Water Dishes (2026)
Tarantulas need access to fresh water at all times. A properly sized, shallow water dish is one of the simplest and most important parts of tarantula husbandry — and one of the most commonly overlooked. An appropriately sized shallow water dish reduces the risk of accidents and is easier for the tarantula to access safely.
What to Look for in a Tarantula Water Dish
- Shallow depth: The dish should be shallow enough that the tarantula can easily exit if it falls in. No deeper than the tarantula's carapace height.
- Appropriate size: Roughly the size of the tarantula's abdomen. Too large increases risk; too small and the tarantula may not use it.
- Smooth sides: The tarantula must be able to climb out easily. Avoid dishes with steep, slippery sides.
- Stable base: Tarantulas will walk over and around the dish. It should be heavy enough not to tip easily.
- Easy to clean: Water dishes need regular cleaning to prevent bacterial growth. Simple, smooth dishes are easiest to maintain.
Water Dish Size by Tarantula Stage
| Stage | Dish Size | Notes |
|---|---|---|
| Sling (under 1") | Bottle cap or similar | Overflow corner of enclosure instead for very small slings |
| Juvenile (1–2") | Small bottle cap or tiny dish | Keep very shallow |
| Sub-adult / Adult | Appropriately sized shallow dish | Roughly abdomen-sized |
Top Tarantula Water Dish Picks
Best Overall: Plastic Bottle Caps & Deli Cups
The most widely used solution in the tarantula hobby — simple, free, and perfectly sized for most tarantulas. Bottle caps work for slings and juveniles; small deli cup lids work for sub-adults. Easy to clean and replace.
Best Dedicated Dish: Exo Terra Water Dish (Small)
A purpose-made reptile water dish with a naturalistic look, stable base, and smooth interior. The small size works well for juvenile to adult tarantulas. Easy to clean and widely available.
Best for Large Adults: Zoo Med Repti Rock Water Dish
Heavier and more stable than plastic dishes. Good for larger adult tarantulas that might tip lighter dishes. Available in multiple sizes.
Do Slings Need Water Dishes?
Very small slings (under 0.5") don't use traditional water dishes. Instead, lightly overflow one corner of the enclosure substrate every 1–2 weeks to provide moisture. As the sling grows, introduce a small bottle cap water dish. By the time they reach 1", most tarantulas will drink from a dish reliably.
How Often to Change the Water
Refresh the water every few days, or sooner if it becomes dirty. Clean the dish regularly to prevent algae, mold, or bacterial buildup. In warmer enclosures water evaporates quickly — check it every 2–3 days as a habit.
What to Avoid
- Dishes that are too deep, especially for slings, juveniles, or molting individuals
- Dishes with steep, slippery sides the tarantula can't climb out of
- Dishes that are too large relative to the tarantula's size
- Leaving water sitting without refreshing for more than a few days