Re: Aquatic Plants Digest V1 #242
To: Aquatic-Plants at actwin_com
Subject: Re: Aquatic Plants Digest V1 #242
From: stevensj at calshp_cals.wisc.edu
Date: Mon, 14 Aug 95 11:36:42 CDT
In-Reply-To: <199508140739.DAA24065 at looney_actwin.com>; from "Aquatic-Plants-Owner at actwin_com" at Aug 14, 95 3:39 am
Mailer: Elm [revision: 22.214.171.124]
> Well after 24 hours of CO2 from a bottle of yeast ph has dropped to a more
> reasonable 6.8 just before the lights went on for for the day. However my
> yellow and brown spots are still growing bigger.
> Should I increase the hardness to say 80 or 100 ppm? Note 55 ppm relates
> to about 3.3 grams per gallon or a bit less. And if so how much baking
> soda should I use for this?
I doubt that your brown spots on your amazon swords are due to CO2 deficiency.
I'd say it's more likely lighting or nutrient deficiency. I'm pretty sure
this is a symptom of potassium or magnesium or nitrogen deficiency. Do you
use any fertilizer & what are your nitrate levels?