Phospha-Guard Bio-Cubes 250ml – phosphate removal

Phospha-Guard Bio-Cubes is intended for reef aquarium keepers who want to lower phosphate levels between water changes. The product is used alongside Nitra-Guard Bio-Cubes and is placed in the sump, external filter or cascade, where it works with the existing filtration.

Why it matters

• No iron compounds: the formula contains no iron, and the manufacturer describes it as non-toxic.
• Biomass as food: the biomass produced by heterotrophic bacteria is a source of food for corals and filter-feeding organisms in the tank.
• Fewer water changes: the product is designed to reduce harmful phosphorus compounds and can postpone the need for water changes.
• No regular dosing: it requires no scheduled replacement or dosing routine.

Specifications

• Product symbol: OAL Phospha-Guard BIO-Cubes 250
• Volume: 250 ml
• Weight: 0.25 kg
• Combined dosage with Nitra-Guard: 3 ml per 1 litre of aquarium water
• Ratio: Phospha-Guard to Nitra-Guard 2:1, used simultaneously
• Preparation: Nitra-Guard matures for 10 days in the sump or filter before Phospha-Guard is added

What it works with

The product is designed for reef aquaria with corals and filter-feeding organisms, and it is meant to be used together with Nitra-Guard Bio-Cubes at the stated ratio. It fits sumps, external filters and cascades, so it can be added to a system that already has a sump or external filter, provided the 10-day maturation period of Nitra-Guard is respected.