Neon Tetra pH: Ideal Water pH & Hardness
Ideal pH 6-7 · Hardness 1-10 dGH
The Neon Tetra prefers soft, slightly acidic water: pH 6-7 at 1-10 dGH. Test your tap water first — many keepers match this range with no adjustment.
Stability beats a perfect number. Chasing pH with chemicals causes dangerous swings; if your water is close, leave it. To gently soften and lower pH use RO water, driftwood or peat; to raise it use crushed coral or aragonite.
| pH | 6-7 |
|---|---|
| Hardness | 1-10 dGH |
Frequently asked questions
What pH is best for Neon Tetra?
pH 6-7 with hardness 1-10 dGH.
How do I adjust pH for a Neon Tetra?
Favor stability: match it naturally with driftwood or RO water to lower, or crushed coral to raise, rather than pH chemicals.
More on this species: Neon Tetra full care guide · tank size · temperature · pH & hardness · tank mates