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Elos Aqua Test Kit - Phosphate
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Elos Aqua Test Kit - Phosphate

In stock: Order by 2PM EDT for same-day shipping (M-F only)

Item #: EO4115

MSRP: $41.99 Save: $14.00 (33%)
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Do you wish you could see all pollutants in your fish tank? Do you ever wonder if there is an easy way to determine if your aquarium is in grave danger of algal bloom? Phosphates dissolves in water, hence, you cannot see it, even ...
Product Description

Elos Aqua Test Kit - Phosphate Information

Part #: CTESTPO4

Do you wish you could see all pollutants in your fish tank? Do you ever wonder if there is an easy way to determine if your aquarium is in grave danger of algal bloom? Phosphates dissolves in water, hence, you cannot see it, even more so predict an increase in its concentration. Phosphates are not removed by simple filtration systems so when you use tap water, it is likely that your tank has it. Uneaten food and excrements are also sources of phosphates. When this compound increases, an algal bloom may occur, and this is bad news for your aquatic creatures.

Know when to change water with Elos Aqua Test Kit - Phosphate from Pet Store. Elos has manufactured several test kits for aquariums and this time, they made you something very essential. This product features a reliable technology called RealColor, which allows you to compare concentrations of phosphates. You take a sample from your tank, follow the instructions regarding use of the Elos "Safe reagents" or low risk reagents and determine the level of phosphate your fish are swimming in.

Elos Aqua Test Kit - Phosphate can detect 0.01 mg/l (ppm) of phosphate, which is the maximum value allowable in a saltwater tank. So if you tested your aquarium and got this value, it is time to change the water.


Phosphate (PO4) build up in aquariums appears to be a fairly common problem in freshwater and saltwater aquariums. They are present in most tap water supplies and are also introduced to aquarium water through fish waste, uneaten fish food, and decaying plant and invertebrate material. Hobbyists end up with rising levels of PO4, leading to the appearance of algae that start to cover the tank panes, the substrate and just about anything else in the tank. The maximum value of PO4 in an aquarium is 0.01 mg/l (ppm) for saltwater aquarium and for fresh water aquarium is 0.5 mg/l (ppm). In deeply planted aquarium the maximum level can achieve up to 1 mg/l (ppm). The periodical analytical evaluation of phosphate in the aquarium should be considered by the serious aquarium enthusiast.

ELOS AquaTest PO4, as well as all the other colorimetric test kit of this line, grant very high precision thanks to several procedures like the use of "RealColor" technology, an accurate system to calibrate the color chart compared to the reagents; the validation of each reagent with NIST (National Institute of Standard and Technology) certified samples and the careful stock management to supply to our customers ONLY the freshest production batch. Our PO4 test, allows the determination of the Phosphate down to a level of only 0.01 mg/l (ppm) Phosphate presence.

  • Easy reading: "RealColor" technology.
  • High precision: thanks to the use of calibrated droppers
  • NIST validation: each batch of elos reagents is validated using NIST (National Institute of Standard and Technology) samples
  • "Safe reagents": reagents and testing procedures are based on Low Risk Reagents. None of our test kit are based on Toxic Reagents.
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Elos Aqua Test Kit - Phosphate Reviews

Average Reviews

Customer Reviews

Much better than average Product Review by coraltopia (Posted on 5/20/12)

Comments: The typical problem with these kits is the difficulty of matching the color through the tube and the paper. This kit keeps that tradition, but it was easier for me to read than most comparable kits. If you're looking for a quality testing kit with simple directions and quality of use - this will get you where you're going

Very good! Product Review by MB (Posted on 2/19/09)

Comments: I find the kit very easy to use, fast, and accurate. The color change in the vial matches the color chart exactly. The results are not ambiguous at all. I would highly recommend this kit to a friend.

Very Easy to use Product Review by GUY (Posted on 2/18/08)

Comments: 2 drops of reagent A and 2 Drops of reagent B, Mix for 2 minutes and your done.
Could not be easier.

Very Accurate Product Review by Jared (Posted on 1/5/08)

Comments: Very Accurate and easy to read. I prefer this to any other Phosphate test kit.

good kit Product Review by bp17 (Posted on 11/17/10)

Comments: Some of the grays are harder to distinguish between them in the lower PO4 levels. Best kit I've used with no false readings. As with and PO4 range kit, make sure to rinse test container well after test.

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