What CO2 drop checker should I buy?

[DAVIDFBT]

So I'm tired of guessing to see if my CO2 is really working and is at optimum level, so I have decided to buy a drop checker. Problem is which one? I have been looking at this one for the past couple days, but I heard that these kinds aren't very accurate. Can somebody help me in this area? By the way, I use a 3 liter bottle of DIY yeast CO2 in a 30 gallon tank and I use a ladder to diffuse it with a powerhead above to break down the leftover bubbles. I am also thinking of adding another 2 liter bottle of yeast mixtoure to my tank.

 

[Bk718]

whats not accurate about the drop checker is the solution/directions it comes with.
1- the solution is a weak ph reagent
2- directions tell you to use tap water

replace the following
1- with a good API ph reagent
2- with a 4dkh solution

Other than that the drop checker is just fine though you can find a cheaper one

 

[DAVIDFBT]

replace the following
1- with a good API ph reagent

Where can find this?

2- with a 4dkh solution

Do I make one on my own? If so, how do I do it?

Where can I find only a drop checker for cheaper? I can't find any locally.

 

[Bk718]

Where can I find only a drop checker for cheaper? I can't find any locally.

ebay.. i got mine there for about $8.50 shipped

 

[DAVIDFBT]

I found a link here in AC how to make a 4dkh solution from basically nothing. Here it is. Will the color graphing system still work the same for this solution? The only way to buy just a drop checker is to buy the one I posted earlier, throw out the ph reagent and use the 4dkh solution.

 

[Bk718]

http://cgi.ebay.com/Aquarium-CO2-Gl...hash=item160269428071&_trksid=p3286.m63.l1177

 

[DAVIDFBT]

Thanks BK, now maybe I can buy some of your plants.

 

[Bk718]

Thanks BK, now maybe I can buy some of your plants.

lol maybe mid next week

heres another link how to make 4dkh solution which involves more accurate measuring but is very simple to make
http://www.aquaticforest.com/guides/how-to-make-a-4dkh-solution/

 

[Jag1980]

I would think most all drop checkers will work the same since it's all the same method of trapping the gas.

 

[fabsroman]

In that ebay ad from the UK, the directions state to use the solution and then add some water from the aquarium to it. Is this a correct method?