my idea for a diy drop checker, need some input
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 > Specific Aspects of a Planted Tank > DIY


Reply
 
Thread Tools Display Modes
Old 10-15-2013, 04:41 PM   #1
genocdex
Planted Member
 
PTrader: (6/100%)
Join Date: Jul 2012
Location: Massachusetts
Posts: 169
Default

my idea for a diy drop checker, need some input


i bought 4dkh fluid, because i dont trust myself making it.

now to make the housing for the liquid.
im going to use 2 90* 1/2" pvc elbows and some spare pipe. to view the liquid im going to use a spare test tube from my api test kit. luckly the cap fits perfectly into the end of the pipe, with a little glue it will hold well. and i can drill the cap to open it.

so now i have 2 questions.

how much of the ph reagent should i add to the test tube (i plan on using 5mls of the 4dkh)

and will this be enough surface area for the gas exchange to take place? or should i just rethink this set up?

i dont like the idea of in tank drop checker because my bush fish attacks everything on the glass (heater and filter intakes) so i dont want the reagents in my water itself. and all the items on my list i have on hand thats why i want to use them

thanks for the input

Last edited by genocdex; 10-15-2013 at 04:55 PM.. Reason: 1/4" pvc was wrong
genocdex is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 10-15-2013, 05:01 PM   #2
Darkblade48
Moderator
 
Darkblade48's Avatar
 
PTrader: (3/100%)
Join Date: Jan 2008
Location: Japan
Posts: 9,325
Default

You only need to add enough drops of bromothymol blue (the pH reagent) so that the colour is easy to read. If you add too much, it will become too opaque to view.

As for the surface area, even with a small surface area, the colour of the indicator solution will change (assuming you have enough CO2); the only difference is that the reaction time will be slower.
__________________
Anthony

A Primer to Pressurized CO2 and A Primer to Planted Tanks
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   Reply With Quote
Old 10-15-2013, 05:24 PM   #3
jfynyson
Planted Tank Enthusiast
 
jfynyson's Avatar
 
PTrader: (13/100%)
Join Date: Apr 2013
Location: NC
Posts: 804
Default

yeah 3-4 drops typically will suffice but I've found 6 drops was too much.
jfynyson is online now   Reply With Quote
Old 10-15-2013, 06:01 PM   #4
xmas_one
Planted Tank Guru
 
xmas_one's Avatar
 
PTrader: (17/100%)
Join Date: Feb 2010
Location: Long Beach, CA
Posts: 3,255
Default

That design will indicate uselessly slow. You want to maximise surface area and minimize path distance. I'd suggest you get one of those easy to read plastic ones and place it somewhere that your fish can't mess with it. Also, neither 4dkh solution nor bromothymol blue are even remotely toxic in the aquarium.
xmas_one is offline   Reply With Quote
Old 10-15-2013, 06:55 PM   #5
PlantedRich
Planted Tank Guru
 
PlantedRich's Avatar
 
PTrader: (1/100%)
Join Date: Jul 2010
Location: Pflugerville, Tx
Posts: 4,553
Default

I had an empty bottle that test strips came in and converted it to hold a test tube. Since the bottle was plastic, cutting it to the length I wanted and adding a tie wrap was simple. I tucked a couple pieces of small sponge on either side of the test tube to hold it in but still be easy to remove for refill/change out of the fluid. Keep in mind that tank water has to be exposed to the air inside the larger bottle as well as the fluid in the test tube. The changes in color are slow but I've never seen one that was fast either.
PlantedRich is online now   Reply With Quote
Old 10-19-2013, 10:05 PM   #6
Hoppy
Planted Tank Guru
 
Hoppy's Avatar
 
PTrader: (75/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 18,867
Default

Quote:
Originally Posted by PlantedRich View Post
I had an empty bottle that test strips came in and converted it to hold a test tube. Since the bottle was plastic, cutting it to the length I wanted and adding a tie wrap was simple. I tucked a couple pieces of small sponge on either side of the test tube to hold it in but still be easy to remove for refill/change out of the fluid. Keep in mind that tank water has to be exposed to the air inside the larger bottle as well as the fluid in the test tube. The changes in color are slow but I've never seen one that was fast either.
Here is a very fast drop checker design: http://www.plantedtank.net/forums/sh...078&highlight=
__________________
Hoppy
Hoppy is online now   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not 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

Forum Jump


All times are GMT. The time now is 07:57 PM.


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