Aquarium parameter guides built around trends.
Reference pages for common readings, with context for what to review when a result moves high or low.
Aquarium parameter guides.
- Freshwater ammonia0 ppm is the normal target for an established aquarium
- Freshwater nitrite0 ppm is the normal target for an established aquarium
- Freshwater nitrateInterpret the trend against livestock, plants, source water, and maintenance history
- Freshwater pHStability and species-appropriate conditions matter more than one universal value
- Planted nitrateBalance plant uptake, livestock load, fertilizer inputs, and water changes
- Planted pHRead pH beside KH, CO₂ timing, aeration, and the livestock range
- Planted carbonate hardness (KH)Use KH as buffering context, not as a stand-alone plant-health score
- Planted CO₂ contextEstimates from pH and KH are approximate and do not replace observation
- Reef alkalinityChoose a stable target appropriate to the reef and salt mix, then watch consumption
- Reef salinityMany reef systems are maintained near natural seawater, around 35 ppt or 1.026 SG at 25°C
- Reef nitrateInterpret nitrate with phosphate, coral response, feeding, export, and the system trend
- Reef phosphateInterpret phosphate with nitrate, feeding, export, algae, and coral response