Join Date: Aug 2012
Location: Ann Arbor, MI USA
either would likely be fine as long as you realize that the drop checker is going to be detecting CO2 levels at the spot in the tank that its placed. I know this sounds self explanatory, but for instance, if you stick it over in the corner that doesn't get much flow or conversely right in front of your lily pipe the readings won't accurately represent the "average" values of your tank. I don't see any problem sticking anywhere in a medium flow are somewhere in the mid water area trying to try to approximate your "average tank conditions.