- Thread starter
- #21
actually it seems odd that all the hydro growers are not all over this product especially dwc. i thought the maxium amount of o2 that water could hold was 6mg/litre at 68F. i suspect that the reason they claim 25% increase in o2 is because they have very high quality water to begin with and if you were using a lesser grade of water the difference would be much greater than 25%