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This new test kit is simple to use and incredibly sensitive down to the low levels required for both saltwater and freshwater aquarium use.
rnThere are currently several phosphate test kits on the market and many will measure down to the low levels of phosphate required to prevent algae problems.
rnThe problem however with nearly all other test kits is that at the lower end it is almost impossible to differentiate between the different pale colour swatches due to extraneous light and reflection from other colours on the comparison card.
rnThe new D-D test kit overcomes this by providing two flat bottomed glass test tubes and a black polystyrene block, which allows the user to look down onto the colour card without any stray light or colour to alter the perception of which is the correct reading.
rnThe test kit with its nice plastic case contains sufficient chemicals to carry out 100 tests after which time a refill is available rather than replacing the whole kit.
