The Planted Tank Forum - Reply to Topic
Planted Tank Forums
Your Tanks Image Hosting *Tank Tracker * Plant Profiles Fish Profiles Planted Tank Guide Photo Gallery Articles

Go Back   The Planted Tank Forum > General Planted Tank Forums > General Planted Tank Discussion > The Planted Tank FAQ > ~Explanation of how a drop checker works~

Thread: ~Explanation of how a drop checker works~ Reply to Thread
Title:
  
Message:
Post Icons
You may choose an icon for your message from the following list:
 

Register Now

In order to be able to post messages on the The Planted Tank Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Additional Options
Miscellaneous Options

Topic Review (Newest First)
09-06-2014 05:14 PM
TaylorDaughtry
Quote:
Originally Posted by rezco View Post
Here is a color chart - i find this very helpful


if you don' t have a reference solution just ignore the bottom row. The colors in the top row tell you where you are in terms of ppm CO2. Chart ONLY applies to quality dKH 4 solutions, if you use tank water for tap water to make your own solution then the comparison does not apply.
That's a fantastic chart; I ended up just taking photos at various times as a reference!
03-08-2014 08:08 PM
rezco Here is a color chart - i find this very helpful


if you don' t have a reference solution just ignore the bottom row. The colors in the top row tell you where you are in terms of ppm CO2. Chart ONLY applies to quality dKH 4 solutions, if you use tank water for tap water to make your own solution then the comparison does not apply.
10-24-2013 10:26 AM
Aganor Good article, helped me understand the funcion of drop check

The shop keeper i go, has some really nice planted tanks in display and he said to me that he only changes the drop check solution months by months,
He uses the jbl one and says that he doesnt need to change it regulary since the co2 display levels are always good,

I dont know prices yet but if it inst that expensive to change monthly, better safe than sorry
08-30-2013 12:06 AM
chrispena33
Quote:
Originally Posted by VeeSe View Post
As long as it doesn't go beyond partial differential equations or transformations of any sort, I should be able to follow.
For me it was fractions. I hate fractions.
03-07-2012 06:06 AM
btimmer92 you can buy reference solution by itself
03-05-2012 09:27 PM
musicjeremy I have been using the RedSea drop checker which does not come with a reference solution. My tap water is about 3-4 degrees KH so I have just been using tap water.

Should I get a new drop checker which actually comes with reference solution?
02-22-2012 05:04 AM
aweeby When it starts losing color. usually that's a month or so.
02-16-2012 01:39 PM
nvladik Anyone know how often you have to change the solution in the drop checker?
05-10-2011 06:04 AM
scape
Quote:
Originally Posted by zenche View Post
i rarely see my plants pearl

i feel like my plants are growing well...what bba i have, came with a bad plant package...i didn't do a bleach rinse, and thoroughly regret it but it doesn't seem to be spreading, so i guess that's also a good sign?
x2 zenche.. I bleach everything now, even between tanks here at home. You just never know!
05-10-2011 06:03 AM
scape
Quote:
Originally Posted by btimmer92 View Post
Hold on scape, 6.6 should be the pH of the drop checker. Any number of things could affect the pH of the water. If you are using a controller, you should be focused on the pH drop between CO2-on, and CO2-off. Reference the red and blue highlighted lines.

Very good points to add, everyone!
Oh okay btmmer92, I see 6.6 on the contoller and the drop checker is green... (using reference 4dkh water)
05-10-2011 05:40 AM
zenche i rarely see my plants pearl

i feel like my plants are growing well...what bba i have, came with a bad plant package...i didn't do a bleach rinse, and thoroughly regret it but it doesn't seem to be spreading, so i guess that's also a good sign?
05-10-2011 03:32 AM
Dave-H
Quote:
Originally Posted by zenche View Post
when you guys say "reaction" from your plants to the CO2, what do you mean? i've been wondering if my CO2 diffusion is working well or not, but haven't determined what the visual signs should/would be.
The reaction I look for is: obvious good growth with no algae
Pearling is a pretty obvious sign that things are good, but it doesn't seem like a necessary goal.
05-10-2011 03:28 AM
btimmer92
Quote:
Originally Posted by VeeSe View Post
Ah I see. I thought you were referring also to the CO2 related drop in pH when you posted that. Anyway, is there a source to read about the relationship if it's too complicated to explain on the forum? As long as it doesn't go beyond partial differential equations or transformations of any sort, I should be able to follow.
I am not sure of actual mathematical equations relating these parameters to pH, all I know is what I stated in the post, that certain parameters either have a positive or negative relationship with each other. Not sure what kind, such as direct, quadratic, etc. that could get very complicated, too complicated to bother with. But what I was saying, about the derivatives, if what hoppy was saying is correct, then that means that change in pH (Y) is a function of change in KH (X) (X change in KH results in Y change in pH). This means that the derivative of this function (dy/dx) is independent of CO2. This does not mean that the variable of pH (Y) itself is independent of CO2. If it was, then (dy/dz) would be zero, meaning that CO2 would not affect pH. So, pH has some sort of relationship with CO2 (Z) a very complex one. pH (Y) is dependent on both pH and CO2, but dy/dx and dz/dy are independent of each other.

Ok, hold on, based on what hoppy said, the equation is Z/Zo=10^(Yo-Y) which means Z=Zo[10^(Yo-Y)]
so to calculate CO2(Z), you plug in starting ph for Yo, and current pH for Y and I guess we are assuming that the starting CO2 is 3ppm? That would have to be true for the equation. Is that true Hoppy? is that for aquarium water?

Wow that was a doozy, im gonna forget about math for a few days now...
05-09-2011 03:46 PM
Hoppy
Quote:
Originally Posted by VeeSe View Post
-The more CO2 dissolved in water, the lower the pH will be.
-The lower your hardness, the lower your pH will be
-There are several other miscellaneous parameters that could effect pH

You mention in this second point that the lower your hardness, the lower your pH will be. I saw Hoppy say in one post that carbonate hardness (KH) does not affect how much your pH will drop due to CO2 (i.e. 30ppm CO2 always drops the pH by 1.0 no matter if it's in 1dKH water or 15dkH water). Can you elaborate on what you meant when you stated the 2nd point?
Not quite: I believe what I said was that a drop in pH of 1.0 means the ppm of CO2 went up by a factor of 10. So, if the ppm of CO2 in the water started at 3 ppm, the final amount is 30 ppm, no matter what the KH of the water. If I didn't say that, I should have.
05-09-2011 02:29 PM
zenche when you guys say "reaction" from your plants to the CO2, what do you mean? i've been wondering if my CO2 diffusion is working well or not, but haven't determined what the visual signs should/would be.
This thread has more than 15 replies. Click here to review the whole thread.

Posting Rules
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


All times are GMT. The time now is 08:26 AM.


Powered by vBulletin®
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright Planted Tank LLC 2012