So how does it works?
So how does it works?
The test runs in this manner:
Step 1: Add 20ml of tank-water into the both the test-tubes or up to the line guide on each test-tubes. I find the line guide pretty accurate so now I just use the line guide to fill up the test-tube each time I test.
NOTE: In order to ensure accuracy, the water must have a pH value range within 3-9, which is not a problem to most of us.
Step 2: Shake the reagent P-1 for 10 seconds and add 10 drops of reagent P-1 to one of the test-tube of tank-water and mix.
Notice that the container for the reagent comes with a unique tip-head that prevents spillage of the reagent while dripping.
Step 3: Add one spoonful of a powder substance (P2) into the test-tube. The spoon is part of the cover (smart move there) and shake vigorously until the reagent is completely dissolved.
Step 4: Allow to set for 3 minutes. (reaction time)
After the 3 minutes is completed, place the black sponge at the bottom of both test-tubes. The test-tube picture on the right is your tank water without any reagent added.
Step 5: Slide both test-tubes along the colour scale until the closest possible colour match is achieved between the two open test tubes when viewed from above.
NOTE: The test-tube without any reagent is to go over the color scale.
As you can see, the colour of the water tested has a slightly darker yellow/greenish hue. Any reading below 0.015mg/l has more of a yellowish hue, which makes it easier to differentiate the colours.
Result: As suspected, the levels of PO4 in my tank's water is not what I desired it to be...
After each use, it's advisable to rinse the test-tubes with distilled water (if possible) or RO/DI water. Alternatively you can use Sodium Hydroxyde solution (approx 0.4%) into the test-tubes and leave it to stand for an hour and then rinse with distilled water.
Conclusion:
With the colours on the colour chart, it is possible to actually know if the PO4 levels are too high, hence the need of a change in PO4 removal media. I'm still unable to tell the exact PO4 levels in my water as my eyes are still locked when trying to tell apart the intensity of the yellowish/greenish hues. But I do know that if it looks greenish, rather than yellowish, the PO4 levels is too high (I try to keep the PO4 levels below 0.03mg/l at all times). Previously on other testkits I've used, it shows me zero PO4 levels where my D&D shows me bluish levels.
Under 0.0 ppm: "œOPTIMUM"
Under 0.008 ppm: "œGOOD"
Under 0.015 ppm: "œACCEPTABLE IN SALT WATER"
Under 0.03 ppm: "œACCEPTABLE IN FRESH WATER"
From 0.03 ppm upwards: "œPhosphate present at levels that will act as fertilizer for Algae growth and will inhabit calcification"
Downside:
Cost "“ Not cheap as compare to the other PO4 testkits out there but can performs 100 tests. (I've not compared this cost with Hanna but I think it's a lot cheaper.)
Test-tubes - The test tubes are made of glass and they stand pretty tall with a small base. One have to be extremely careful when conducting the test not to knock-over the tubes as that may mean broken tubes and a high cost to have them replaced as you can't just buy the tubes.