drop checker colour

Joined
26 Mar 2009
Messages
43
hi guys should the colour in the drop checker change overnight when the ph rises?this is the colour in the checker this morning,i run co2 for 9 hours a day which is 1 hour before lights on and off 1 hour before the lights go off.
P1000487.jpg
 

Steve Smith

Member
Joined
19 Jul 2007
Messages
4,421
Location
Leamington Spa, UK.
It should get darker as the level of CO2 drops, but bare in mind that plants "exhale" CO2 at night I believe. One of the more sciencey guys may be able to help you out more though :)
 

vauxhallmark

Member
Joined
29 Jan 2008
Messages
570
Mine doesn't really get much darker overnight - I don't have any surface agitation, so I think it stays quite stable. (CO2 goes off with a solenoid like yours). If the drop checker is exposed during a water change it goes dark dark blue in 10 minutes, so I know it's working. If your fish seem happy in the morning I wouldn't worry.

Mark
 

Themuleous

Member
Joined
6 Jul 2007
Messages
4,124
Location
Aston, Oxfordshire
Sorry you have probably been asked this before, but are you using the 4dKH water in that DC? If so then the colour you show looks about right to me :) I dont really notice a difference in the DC overnight, although I do run my CO2 24/7.

Steve is also right is saying that plants do give off CO2 at night, but this is less than they take in during the day.

Sam
 
Joined
26 Oct 2008
Messages
1,646
Location
Cheshire
Themuleous said:
Sorry you have probably been asked this before, but are you using the 4dKH water in that DC? If so then the colour you show looks about right to me :) I dont really notice a difference in the DC overnight, although I do run my CO2 24/7.

Steve is also right is saying that plants do give off CO2 at night, but this is less than they take in during the day.

Sam
Sam & Guys

If you are using ph reagent and 4dkh solution you will not see a dramatic change of colour ie drop checker solution turning blue, more like a dark green but certainly not blue. My DC with the above solution does not turn blue - but my Red Sea does which has their solution + 1 ml of tank water.

This begs the question how good / reliable is ph reagent and 4dkh

Regards

Paul.
 
Joined
26 Mar 2009
Messages
43
mine turned blue using tank water as the tank ph is 7.6,ive just changed to 4dkh so i'll see if there's any difference using 4dkh to tank water
 

jay

Member
Joined
22 Apr 2008
Messages
693
Location
Harrow, Middlesex
That colour looks fine, mine is like that during light hours and yellow in the morning.
As long as you have some nice surface movement and feeding the plants well enough for them to pearl and bring oxygen into the water, the fish will be fine.
 
Top