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  1. JamesC

    Does accuracy of 4dKH solution matter?

    There are lots of posts around how to make your own 4dKH solution and how important it is to be accurate, but does it really matter? When you add a couple of mls to your drop checker and then add some drops of bromothymol blue you are in effect diluting the 4dKH solution. I've seen it...
  2. JamesC

    Azoo CO2 Regulator Review

    Have just purchased one of these Azoo regulators off eBay and thought I'd share my view and experience with using it. The eBay seller is called goaqua88 and is based in Taiwan. This is the actual item - AZOO-CO2-Pressure-Regulator-With-Magnetic-Valve-plant. I paid £37.91 with £11.50 P&P...