CO2 and drop checkers

laka

Prolific Poster
Jan 21, 2007
63
0
6
Why go to all the fuss of a drop checker when one can use a CO2 test kit? I have a LaMotte CO2 kit and am happy with it. Are you saying that drop checkers are more accurate?
 

Vladimir Zhurov

Lifetime Members
Lifetime Member
Aug 25, 2006
32
0
6
London, ON
I do not use neither, but I would guess that drop checker has the following major advantages:

1. it is always ON, you can check CO2 level as you pass by the tank;
2. it is cheaper.

Regards.

Vladimir.
 

VaughnH

Lifetime Charter Member
Lifetime Member
Jan 24, 2005
3,011
94
48
85
Sacramento, CA
The drop checker is also accurate, even if your tank water is high in tannins and phosphates. That isn't the case with any of the test kits that use KH and pH to determine CO2 ppm.
 

laka

Prolific Poster
Jan 21, 2007
63
0
6
Yes i agree Even LaMotte admit this. I live in Australia. Where can i purchase a drop checker from? What does ADA stand for?
 

laka

Prolific Poster
Jan 21, 2007
63
0
6
Does anyone have any experience with Dupla Permanent CO2 test kit?
LAKA
 

Tom Barr

Founder
Staff member
Administrator
Jan 23, 2005
18,696
745
113
You can DIY, check Vaughn's many incarnations.

You can buy from many of the Hong Kong ebay places.
About 15-20$ US.

You'll need the KH ref solution and bromo blue pH indicator. Add 3 drops to 6mls of KH solution inside the drop checker, replace about 2-3 week intervals etc.

Getting the KH ref solution will be the tough part unless you or others "Down Yonder" there make it.

Regards,
Tom Barr
 

VaughnH

Lifetime Charter Member
Lifetime Member
Jan 24, 2005
3,011
94
48
85
Sacramento, CA

PaulB

Subscriber
Jan 24, 2005
74
0
6
Melbourne, Australia
LAKA, i have bought 2 of the drop checkers from ebay (broke the first), so yes you can get them in Australia (cost about $36.00 delivered). I also have 5lt of Tom's original 40°KH solution (4.99gr bicarb soda to 5lt of distilled water). Let me know if you want some of this. I can even dilute this down to 1lt of 4°KH solution if you can't do this yourself.

P.S. I have been using the drop checker method for about 6 weeks and its a very big improvement over any of the other methods to determine CO2.
 

laka

Prolific Poster
Jan 21, 2007
63
0
6
Thanks for all the advice.
PaulB i will order a drop checker from ebay tonight. I should be OK with making the KH ref. sln-will follow VaughnH's recipe. If i run into any probs. i'll let you know.
LAKA