High phosphate levels act as fertilizer for algae in your aquarium, so monitoring them to ensure their levels stay low is important if you want to avoid a nasty bloom of algae in the near future, which you can do easily with a Salifert Test kit for phosphates. Phosphate has several negative effects if present in a too high concentration. First of all undesirable algae growth might result. Making an aquarium an unpleasant sight. Phosphate also blocks or retards the growth of corals and calcareous algae. One of the scientific studies shows that a phosphate concentration higher than 0.05 mg/L decreases the growth of calcareous algae by 90%! Washing fish food, which is a rich source for phosphates in a sieve after thawing reduces the input of phosphate tremendously. Also avoiding use of phosphate-rich low-grade activated carbon helps keep phosphate levels as low as possible. Checking the activated carbon for phosphate prior to use is therefore highly recommended.

Conclusion: Since phosphate can have major consequences when present in a concentration above 0.05 mg/L a test kit should be able in detecting even lower concentrations. The Salifert phosphate test already detects, within seconds, 0.015 mg/L of phosphate. This makes phosphate measurement highly reliable and informative allowing timely measures to be taken. The kit can perform approx. 50 measurements.

How to Use

1. Add 10 ml of aquarium water to the test vial with the syringe.
2. Add 4 drops of PO4-1 reagent and swirl the vial gently for 10 seconds.
3. Add 1 level scoop of PO4-2 reagent and swirl gently for 30 seconds.
4. Compare against the colour chart in daylight, looking down through the vial against the white background.

What’s in the Box

PO4-1 liquid reagent, PO4-2 powder with its scoop, a syringe, a test vial, the colour comparison chart and the instructions.

Tests per Kit

Approximately 60 tests. The chart reads 0.00, 0.03, 0.10, 0.25, 0.50, 1.00 and 3.00 ppm phosphate — the fine steps sit at the bottom of the range, which is where a reef tank is read.

Freshness & Storage

Every batch we dispatch carries a minimum of 6 months’ remaining shelf life. Store this product in a cool, dry place away from direct sunlight, with the cap or inner foil closed tightly after each use.

Backorder & Dispatch Timeline

This item is stocked to order. Back-orders are consolidated and placed with our overseas suppliers once a month, on the last day of the month, and all such orders are shipped before the 15th of the following month.

Back-orders cannot be cancelled once they have been placed with the supplier. If you cancel before that, payment-gateway charges of 2% plus GST are deducted and the balance refunded. In the rare case a supplier cannot fulfil the item, we will offer you an alternative first, and refund in full with no deduction if you would rather not take it.

Returns & Replacement

Returns are accepted within 7 days of delivery, provided the item is unused and in its original packaging. Manufacturer-sealed items cannot be returned once the seal is broken, and sale-priced items are not refundable.

If your item arrives defective or damaged, message us on WhatsApp with your order number, or email us if you would rather, and we will replace it. Approved replacements are delivered within 3 to 5 business days. Transit damage is covered by insurance on every shipment. If tracking shows delivered but nothing reached you, tell us within 72 hours, which is the reporting window Indian couriers allow. Damage caused during installation or use is not covered; replacement spares for such cases are chargeable.

Full terms are on our Cancellation & Returns page.