Brightwell Aquatics PhytoGreen-M 500mL Driftwood Betta Fish Bowl If you know the strontium

If you know the strontium depletion rate then dose accordingly as per above

conversely

Use in aquarium keeping: Strontium is required for formation of aragonite accounting for up to 1% of its weight

and is for use in fresh and saltwater aquariums

and every 6 - 8 months in low-nutrient systems

Brightwell Aquatics PhytoGreen-M 500mL Driftwood Betta Fish Bowl If you know the strontium10 15m Phytoplankton Suspension for Soft Corals, Clams, Sponges, and Other Filter Feeders. Overview: Provides phytoplankton ranging in size from 10 15m. Ideally sized for many soft corals, clams, sponges, tunicates, tube worms, and larval invertebrates. Formulated to provide over 650 million phytoplankton cells per ml. Does not require refrigeration. Supplemented with a proprietary amino acid to aid in coloration of invertebrates. Formulated by a