dawntwister

Just read at krib.com that diy co2 is not safe to use if your water is soft; for ph will fluctuate with this non-regulated system.

gpodio

You have to be a little more careful obviously, the PH will follow the rate of CO2 which starts off high and tapers off over the course of the mixtures' lifespan. It depends how low your KH is, anything 2 or above should not be an issue in my opinion. If you take for example a tank with 2KH and a change in CO2 concentration from 25ppm to 15ppm, the change in PH is about 0.2. Now if the same occurred in a tank with KH5, the change is PH is still approximately 0.2. So the magnitude of the fluctuation is comparable, the resulting PH is what differs mostly.

Giancarlo

dawntwister

The kh of my water 2. Read at krib.com it is unsafe to use unregulated co2, which diys are, with soft water. gpodio says it can be done if careful. Now very uncertain if I can change from using flourish excel to diy solution. Any suggestions as to how to carefully switch to diy co2?