You asked "what if my ph isnt 6.6? what then?" I was using some different numbers to show you that Chuck's calculator is still valid."If an accurate carbonate based KH solution is used in it; you still use Chuck's chart. Let's say you use the 5 dKH solution in a drop checker and your pH is 6.7. Using his calculator you get 29.9 ppm of CO2."
i thought that you used the color of the water in the drop checker to figure out the co2 concentration. if you use a solution of 5dkh and the solution is green then you have about 35-40 ppm of co2 in the tank, right?
You asked "how long is the ph solution in the drop checker good for before you need to change it?" I don't know how long it lasts. Like I said, I haven't read the articles. Using a fresh bottle of pH indicator solution will make it last longer. I know that much."The question about how long the drop checker solution lasts has been asked several times but I haven't read those articles. I believe the best idea is to use a fresh bottle of pH indicator solution for best results."
i was talking about what was in the drop checker, in the tank.
The Sera CO2 test kit is a drop checker similar to the others and it works the same way. The Sera device is placed in the aquarium. Here's the contents: CO2 long-term indicator with suction cup, 15ml indicator solution, color chartif you have a co2 test kit what the point of the calculator and the drop check test?
ps.sorry i dont know how to quote specific portions of a message