API pH Down 16 fl oz — Freshwater pH Acidifier for Aquariums - API

API pH Down 16 fl oz — freshwater pH acidifier for aquariums

The API pH Down 16 fl oz gradually lowers freshwater aquarium pH when it's too high for the species (tetras, discus, Amazon fish). Dose per the chart on the bottle and retest after each addition.

Specifications

• Brand: API
• Format: 16 fl oz (473 ml)
• Type: liquid pH acidifier
• Compatibility: freshwater aquariums

Why get this from ReefSolution

• API Freshwater pH Test Kit — to monitor pH during adjustment.
• API pH Up 16 fl oz — the opposite when pH is too low.
• API Freshwater Master Test Kit — to validate all parameters after adjustment.

Frequently asked questions

How fast does pH drop with API pH Down?

Gradually — never more than 0.2 points per 24h to avoid stressing fish. Always retest before adding a second dose.

Is this safe for invertebrates?

Dose carefully. Invertebrates are sensitive to rapid pH swings — prefer slow adjustment via water changes.