App-standard NH4Cl cycling stock (50 g/L)
ammonium
NH4Cl
Manufacturer data
As an Amazon Associate we earn from qualifying purchases. Buying through these links costs you nothing extra and helps keep the app free.
What one dose does
PARAMETER
1 ml / 100 L
Ammonia
+0.1592 ppm NH₃/NH₄⁺
To raise ammonia by 1 ppm NH₃/NH₄⁺ in 100 L: 6.3 ml.
How it’s used
50 g/L x 0.2619 = 13.09 g/L N; 1 ml in 100 L = 0.1309 ppm N; ~15 ml per 100 L for 2 ppm-N.
Cautions
• FISHLESS CYCLING ONLY - never dose ammonia/ammonium into a tank with livestock.
• Target ~2 ppm NH3/NH4-N (Dr. Tim's: 4 drops/gal = 2 mg/L-N); never exceed 5 ppm. Solid: 0.76 g NH4Cl per 100 L for 2 ppm-N.
• Kits report differently (as N, as NH3, or as NH4): NH3 = N x 1.216; NH4 = N x 1.288. Confirm the kit's basis.
• Reduce calculated volume ~20% for rock/sand; turn off UV/ozone during the cycle (Dr. Tim's).
• Nitrification consumes ~0.143 meq/L alkalinity per ppm N (0.80 dKH per 2 ppm-N dose) - keep alk up during cycling.
Sources
50 g made up to 1 L total.
derived (app standard)