Drop checker solution questions - The Planted Tank Forum
 2Likes
  • 1 Post By Edward
  • 1 Post By Chlorophile
 
LinkBack Thread Tools Display Modes
post #1 of 8 (permalink) Old 02-26-2019, 05:01 PM Thread Starter
Newbie
 
PTrader: (0/0%)
Join Date: Feb 2019
Posts: 4
Drop checker solution questions

I want to get a low cost drop checker for my 155g tank however unless you're willing to pay a lot for a checker + solution the reviews on them are not good. Is there any reason why I can't buy a cheap drop checker, a bottle of Bromothymol blue, and make my own 4dKH? Bromothymol blue is quite cheap in a .04% solution but I can't find much about it being used or if that's the correct concentration.
Rusty Shackelford is offline  
Sponsored Links
Advertisement
 
post #2 of 8 (permalink) Old 02-26-2019, 06:07 PM
Planted Tank Obsessed
 
PTrader: (0/0%)
Join Date: Jan 2018
Posts: 447
I'm an aquarium CO2 newb but have background otherwise. Don't think that there's any specific concentration required for the indicator. It's fairly strong stuff as far as coloring a solution. .04% should be fine. Stronger would be darker (obviously). If too dark you could always dilute as needed. Just a difference of how many drops you'd add in final solution. In either case not sure how much you'd save but you'd have a lifetime supply in a single small bottle.

I got one recently with the glass, 4dKH solution, and extra indicator for like $12 on Amazon. Then just bought some cheap with glass only. Not sure how useful they are longer term but just going in I wanted some easy reference and as a double-check to my pH measurement while testing things. Too many individual smaller tanks in my case but with a larger tank a controller probably makes a lot of sense.
Mike A. is offline  
post #3 of 8 (permalink) Old 02-26-2019, 09:13 PM
Algae Grower
 
PTrader: (0/0%)
Join Date: Feb 2019
Location: Los Alamos, New Mexico
Posts: 134
I made up my 4 dKH solution after measuring my well-aerated tap water at 6 dK, by mixing it 2:1 with deionized water. Then I checked to verify it was now 4 dKH.


What I want to know is how to clean the drop checker bulb. Mine has acquired some kind of film inside the bulb, and even a wash in concentrated HCl didn't remove it.
kgbudge is offline  
 
post #4 of 8 (permalink) Old 02-27-2019, 12:16 PM
Wannabe Guru
 
Edward's Avatar
 
PTrader: (0/0%)
Join Date: Apr 2005
Location: at home
Posts: 1,055
Quote:
Originally Posted by kgbudge View Post
What I want to know is how to clean the drop checker bulb.
For the glass Clorox, Javex, Bleach.

Rusty Shackelford
You can use 2L Coke bottle, fill it with distilled or RO water and add 0.24 grams of baking soda NaHCO3 to make 4 dKH solution. Fill the drop checker and add two drops of pH reagent.
yusufsarac likes this.

Perpetual Preservation System
The most accurate Aquatic plant fertilizers


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
&
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by Darkblade48; 02-27-2019 at 10:52 PM. Reason: Please use the edit function for back to back posts to keep threads cleaner
Edward is online now  
post #5 of 8 (permalink) Old 03-01-2019, 09:57 AM
Algae Grower
 
PTrader: (0/0%)
Join Date: Feb 2017
Posts: 61
I'm very interested in this. I have opened another thread a couple days ago here: https://www.plantedtank.net/forums/2...r-all-diy.html

Maybe we can come up with another formula that works with red cabbage instead of Bromothymol blue and make it completely diy.
yusufsarac is offline  
post #6 of 8 (permalink) Old 03-02-2019, 03:07 AM
Moderator
 
Darkblade48's Avatar
 
PTrader: (3/100%)
Join Date: Jan 2008
Location: Toronto/Singapore
Posts: 11,461
Quote:
Originally Posted by kgbudge View Post
I made up my 4 dKH solution after measuring my well-aerated tap water at 6 dK, by mixing it 2:1 with deionized water. Then I checked to verify it was now 4 dKH.
The problem with using tap water is that there may be other factors (such as phosphates) that may influence the pH. This is why a solution of deionized water where the only influencing species is carbonate is ideal for a reference solution.

Anthony


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
and
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Eheim Pimp #362 - Eheim 2213 x2, Eheim 2028, Eheim 2217, Eheim surface skimmer and Eheim autofeeder.
Victor Pimp #33 - HPT272-125-350-4M
Darkblade48 is offline  
post #7 of 8 (permalink) Old 03-02-2019, 03:02 PM
Algae Grower
 
PTrader: (0/0%)
Join Date: Feb 2019
Location: Los Alamos, New Mexico
Posts: 134
I know my tap water's chemistry pretty well, so I'm pretty safe using it this way. Your mileage may vary.
kgbudge is offline  
post #8 of 8 (permalink) Old 03-02-2019, 09:34 PM
Planted Tank Guru
 
Chlorophile's Avatar
 
PTrader: (6/100%)
Join Date: Aug 2011
Location: State of Emergency
Posts: 2,012
If you look back at my old journals you'll see I have had some pretty bad bad algae before.
The best thing I ever did was get rid of my drop checker.

If you make the solution right you're limiting yourself.

I moved houses and lost my solution so when I set the tank back up I just turned co2 up every day.
One day I noticed fish look stressed, so did 50% water change and turned co2 down a hair.
Now it's perfect, I don't get BBA anymore either.
Ph goes from 8.2 to 6.2-6.4 depending on my water level in take and surface agitation.
Ken Keating1 likes this.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
Chlorophile is offline  
Reply

Tags
None

Quick Reply
Message:
Options

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:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Similar Threads
Thread Thread Starter Forum Replies Last Post
Does 4dKH solution in a drop checker wear out? Guyver Equipment 3 04-05-2011 02:07 AM
drop checker solution expired? outcast Fertilizers and Water Parameters 1 03-25-2011 06:17 PM
What other fert in the ei scheme raises nitrates? bsmith Fertilizers and Water Parameters 11 12-20-2008 12:43 AM
Best Phospate Test Kit pvtschultz Equipment 12 07-16-2008 12:06 AM
Mixing reference solutions? ColeMan Fertilizers and Water Parameters 10 05-07-2008 12:36 AM

Posting Rules  
You may 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
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome