re: Info on C02 Injection Needed
To: Aquatic-Plants at actwin_com (Aquatic-Plants)
Subject: re: Info on C02 Injection Needed
From: "David W. Webb" <dwebb at ti_com>
Date: Fri, 23 Feb 1996 16:05:42 -0800
Conversation-Id: <BMSMTP8251195361a0206807 at dlep1_itg.ti.com>
>From: Marty Durkin <durkin at stsci_edu>
>I have setup a DIY-Yeast C02 Injection system in a
>1 gallon bucket to test things out. The water initially
>had a ph of 7.5, a KH of 3, and a GH of 6. The C02 injection
>has actively been injecting CO2 through an airstone since
>last Saturday. As of Wednesday evening, the ph had dropped
>to 4 (I used 2 separate test kits to test it). The KH and
>GH have remained unchanged. By the way, I was using a 1 gallon
>bucket as a test case to see how long the C02 would last and
>what changes in water chemisty I would notice.
>My question is, since I will be using this on a 55 gallon tank,
>will the ph drop as drastically since I am dealing with a much
>larger volume of water. By the way, my ph, gh, and kh of the
>tank are the same as those mentioned initially and have remained
>stable for several years now.
I'd probably go ahead and bump my KH up to at least 4 if the pH starts to drop
too much, but beyond that, I don't expect that you'll have any real problem
with a pH crash on a yeast system unless you're dumping CO2 out in a big hurry.
If you're only using 1 tsp. of yeast, I don't expect a problem at all. I ran
my 55g tank with two 2-liter bottles (1 tsp. each) for over a year prior to
moving and never had a pH crash (my tap water KH is 5).
David W. Webb in 75F, smoky Plano TX, where the grass fires have people's
allergies in high gear.