Originally Posted by StevieD
Yeah my co2 chart readings are defiitely off. Here's why:
It's only been 2 weeks and 2 40% water changes and i'm wondering how long it will be until the "buffer" is out of the water. Getting as close to the colour on the Cal Aqua double drop checker, I set the Ph, and it's hard for me to get above a ph of 6.
Do you mean below 6.0? CO2 should be bringing your pH down not up.
Once you drop checker reaches the color you want that is the correct pH to set your controller at. If you want to run at a lower pH you will have to reduce the amount of carbonates in your water. Adding bicarbonates will increase the pH of your “30 ppm” tank.
BTW I wouldn’t run at 30 ppm. My tank is at 20 ppm and my plants grow like crazy.