Any 3-5 week recipes? - The Planted Tank Forum
 
LinkBack Thread Tools Display Modes
post #1 of 9 (permalink) Old 10-24-2004, 03:24 AM Thread Starter
Planted Tank Obsessed
 
Darks!de's Avatar
 
PTrader: (9/100%)
Join Date: Oct 2004
Location: Long Island, NY
Posts: 332
Talking Any 3-5 week recipes?

I just built my first DIY CO2, experimenting with new diffuser ideas, but want to know if there are any good dry yeast recipes out there that will last 3-5 weeks...20 L and i want around 15ppm

...is there any difference in bottle size (i.e. 2L vs. juice bottle), besides stability? does it affect the length of the recipe or the rate of CO2 production?
Darks!de is offline  
Sponsored Links
Advertisement
 
post #2 of 9 (permalink) Old 10-25-2004, 11:25 AM
Guest
 
PTrader: (0/0%)
Join Date: Sep 2004
Posts: 42
I can't claim the 5 week CO2 lifecycle you are seeking but have some experience that might help...

I have been getting a reasonably consistent 1 bubble/sec from 2 x 2L bottles containing 1.5L water, 1.5 cup sugar, .25 teaspoon dried baking yeast, changed alternate fortnights over the last 12 weeks. There is some drop at the end of each 2 week period as the oldest brew is totally "exhausted" whilst the fresher brew is already past its production peak.

I believe that the main factors in the length and consistency of this lifecycle are a) very little starter yeast to give slower start-up and b) daytime warming / nightime cooling. As well as the desirable production periods the night time cooling seems to "smooth out" the large production peak that I got at 3 - 7 days when I kept the brew snugged up to the canister filter 24 hours.

Unfortunately I dont think this will scale up much for even longer life as yeast growth is an exponential thing and it may infact become harder to cool the brew down effectively at night.

Now that things seem stable I will try adding some baking soda and see if that helps at the tail end of the cycle by controlling the acidity.

(P.S. As I have a rather cool room I just arranged to warm the yeast during the day by venting the lighting ballasts into an inverted carton containing the fermentation bottles. Also, I only partially fill the pair of 2L bottles as this a) gives me the bubble rate I need and b) my theory is that the large gas space is providing a faster morning start/night time stop as it expands/contracts more rapidly - though I havent actually measured this effect. )
Ianice Berg is offline  
post #3 of 9 (permalink) Old 10-25-2004, 11:52 AM
Planted Tank Obsessed
 
zapus's Avatar
 
PTrader: (1/100%)
Join Date: May 2004
Location: Athens, Georgia
Posts: 328
Something anonapersona mentioned about alcohol and dilution got me to thinking. I switched over to a gallon jug with a quart of jello jiggler mix in the bottom, topped off almost full, to dilute the alcohol as much as possible. It's been running pretty steadily for 3 weeks now with no signs of slowing.

Well, at least my algae is pearling...
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
zapus is offline  
 
post #4 of 9 (permalink) Old 10-25-2004, 12:54 PM Thread Starter
Planted Tank Obsessed
 
Darks!de's Avatar
 
PTrader: (9/100%)
Join Date: Oct 2004
Location: Long Island, NY
Posts: 332
I'd rather stay away from jello for now and can only fit one 2L atm...any other good ratios people have found successful?
Darks!de is offline  
post #5 of 9 (permalink) Old 10-25-2004, 02:45 PM
Guest
 
PTrader: (0/0%)
Join Date: Nov 2003
Posts: 2,165
The larger the container, the longer the production, although you will hit a limit at about 5-6 weeks, due to the way yeast colonies grow to match the size of the food quantity available to them.

In a 1 gallon jug, I regularly get 4-5weeks of CO2. 1.5cups sugar, 1/4 teaspoon bakers yeast.
malkore is offline  
post #6 of 9 (permalink) Old 10-25-2004, 08:41 PM Thread Starter
Planted Tank Obsessed
 
Darks!de's Avatar
 
PTrader: (9/100%)
Join Date: Oct 2004
Location: Long Island, NY
Posts: 332
Very interesting...thanks

Anybody have any experience with baking soda in the mixture?
Darks!de is offline  
post #7 of 9 (permalink) Old 10-26-2004, 01:54 AM
Guest
 
PTrader: (0/0%)
Join Date: Jan 2004
Posts: 1,261
You've gotta experiment a bit. Different water + different yeast = different result.

I have best result using a 2L coke bottle with half teaspoon of yeast (1.5 cup of sugar). The bottle will start producing at steady rate after 2 days (I always prepare new solution 3 days before the schedule to get steady CO2 output. This work for me for 26-28 days. When I use a tad short than 1/2 tsp of yeast (maybe 0.4 tsp yeast) the solution last more than 5 weeks somehow but produce a little less bpm. 1/4 tsp doesn't work well for me.
ninoboy is offline  
post #8 of 9 (permalink) Old 10-26-2004, 12:02 PM
Wannabe Guru
 
PTrader: (8/100%)
Join Date: Jan 2004
Location: NY
Posts: 1,896
I am using about the same recipe as everyone else. about 2 cups of sugar 1/4 teaspoon fleischmanns yeast, and 1/4 teaspoon baking soda. I don't really know if the baking soda makes a differance but I have been adding it and the solutions have worked well. Now that it has gotten colder out I can definetaly see the bubble rate going down compared when my house temp was 75 during the summer.
Urkevitz is offline  
post #9 of 9 (permalink) Old 10-27-2004, 01:19 AM
Planted Tank Obsessed
 
zapus's Avatar
 
PTrader: (1/100%)
Join Date: May 2004
Location: Athens, Georgia
Posts: 328
Fleischmann's quit working for me when my house cooled down at the end of summer, maybe a difference of 5 degrees or so. I switched to wine yeast and am rolling along again. I was surprised by the difference 5 degrees made with CO2 production. Have also been trying CaCO3 instead of sodium bicarbonate for acid neutralization. The jury is still out.

Well, at least my algae is pearling...
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Last edited by zapus; 10-27-2004 at 01:24 AM. Reason: addition
zapus 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



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