C02 drop checker indicator solution

[tmdavies]

I read that the solution that comes with the checker is inaccurate and that a more reliable solution can be made using api ph test liquid?
Is this true? If so how can this be done
Thanks

[blert]

You need to acquire some 4dKH solution. It is just distilled water brought up to a KH hardness of 4 degrees using baking soda. You can find it easily on eBay for cheap. You can make your own but the recipe will leave you with A LOT of it. You put about three drops of low range pH solution into your drop checker then fill it up the rest of the way with 4dKH solution.

[tmdavies]

Thanks ill give that a try

[maxwellag]

It depends on what comes with it. Most drop checker solutions contain the same chemical that is the API pH test.