App-standard Na2SiO3·9H2O stock (10 g/L)
silicate
Na2SiO3·9H2O
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
Silicate
+0.0211 ppm SiO₂
To raise silicate by 0.2 ppm SiO₂ in 100 L: 9.5 ml.
How it’s used
10 g/L x 0.2114 = 2.11 g/L SiO2 (0.99 g/L Si).
Cautions
• Natural surface seawater silicate is low and variable; most reefs run <~1 ppm SiO2. Dose only deliberately (sponges, diatom-vs-dino strategies), small daily amounts - a large single addition is likely to trigger a diatom bloom.
• Kits report SiO2 or Si (SiO2 = Si x 2.139); confirm the unit before calculating.
• Metasilicate is caustic (pH ~12-13 in solution); gloves and eye protection.
• Silica is depleted quickly (RHF observed ~50%/day) - test before each adjustment.
Sources
10 g made up to 1 L total.
derived (app standard)