What are the the best testing strips out there for measuring pH, ammonia, nitrates, etc.? I would like to find something more accurate (currently I'm using API test kits with droppers in 5 mL). It seems odd to me that the assumed accuracy and tight parameters that one needs to keep to maintain a mixed reef that API's kits are even suggested to anyone from the LFS. I would like to know if someone has better and more accurate results from other testing kits for their aquarium.

My setup is a mixed reef marine aquarium and eventually my next larger tank might be seeded with this 75G (around 280 liters) I have now. That aquarium will have controllers that will have top shelf controllers with industrial grade probes. I don't have that now. What I have is bottom of the barrel test kits though, monitoring my few thousands dollars worth investment.

Again, does anyone know of a more accurate kit?

  • The kit you are using now, are it those paper strips you have to put in water, or is it a liquid testkit?
    – Diether
    Mar 30, 2017 at 8:32
  • It's API's master liquid test kit with Nitrite, Nitrate, Ammonia, and pH. tinyurl.com/lnr2c3n
    – Fus Ro Dah
    Mar 30, 2017 at 14:19

1 Answer 1


After disparate results each time I tested with APIs test kits, I decided to switch to Red Sea, you can buy kits for marine care on amazon.com.

I'm very happy with the results they produce and they read better and with far smaller error tolerance.

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