Description
Phos-Start supplies phosphate as insoluble mineral particles rather than dissolved phosphate, alongside prebiotic biopolymers, calcium and trace elements. The idea is to feed a developing microbiome through the tank’s first months instead of dropping a nutrient spike into the water column.
It earns its place on dry-rock and ceramic-rock startups and on bare-bottom reefs – systems with no live substrate to seed bacteria from. Built for the cycling phase and the first two to three months of a young aquarium; once the tank is mature and stocked, nutrient control becomes a different job.
Not sure if it suits your setup? Ask our Reef Bot for help choosing, and we can help expedite your order.
Shipping & Returns
- Equipment and dry goods ship at their own rate. Free shipping at $349 or more applies to qualifying livestock only — corals, fish, inverts and live copepods. The $10 box & handling fee is a livestock packing fee and does not apply to dry-goods orders.
- All sales are final on equipment and dry goods. We are a retail store, not the manufacturer.
- Register your product with the manufacturer and keep your receipt — their warranty is how a faulty unit gets replaced, and they are faster at it than a shop could be.
- Not sure who to contact for a warranty claim? Call us and we will point you to the right place.
Ships from our Key West store · (305) 850-9949
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