Andy D
Member
- Joined
- 27 Apr 2013
- Messages
- 1,461
Hi All,
I'm sure there is an easy answer for this that I am not thinking about so apologies in advance.
Drop checkers are said to be 2 hours behind when it comes to the colour change so I take this to be that what the drop checker shows indicates the pH 2 hours before.
CO2 concentrations should be at 30ppm by lights on with is generally considered to be a lime green colour on the drop checker.
Therefore why do we need the drop checker to be light green once lights are on? To me it makes sense that the colour of the drop checker 2 hours after lights on is key as this reflects the levels 2 hours before.
Is it just to be sure the levels are right when lights are on?
I'm sure there is an easy answer for this that I am not thinking about so apologies in advance.
Drop checkers are said to be 2 hours behind when it comes to the colour change so I take this to be that what the drop checker shows indicates the pH 2 hours before.
CO2 concentrations should be at 30ppm by lights on with is generally considered to be a lime green colour on the drop checker.
Therefore why do we need the drop checker to be light green once lights are on? To me it makes sense that the colour of the drop checker 2 hours after lights on is key as this reflects the levels 2 hours before.
Is it just to be sure the levels are right when lights are on?