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**To**:**<Aquatic-Plants at actwin_com>****Subject**:**Re: Dying cories****From**:**"Philippe Lemaire" <ph.lemaire at CompaqNet_be>**- Date: Sun, 27 Oct 2002 15:49:48 +0100
- References: <200210230519.g9N5JtU4017032 at mailhub_actwin.com>

| Date: Tue, 22 Oct 2002 17:00:09 -0700 | From: jgarden2000 at juno_com | Subject: Re: Dying cories | | Philippe Lemaire seems to suspect my K dosing. | | > 1. What do you mean by a "capful" ? | > How many ml of what (K2SO4) in which concentration (40 gr./l) | ??? | | The directions on the stuff says that a capful is 1 tsp or 5 ml. The | fertilizer says it's "0-0-3". The last number is for K, but I forget what | it means... Further down the label says "Soluble Potash (K2O): 3%". I,m not quite sure about this but let suppose it is 30*78.2/94.2 i.e. 25 gr./l ... You add 25gr / 200 i.e. 125mg ... Suppose that your tank contains 125 l (a tank is never full), you add 1 PPM every week | > 2. Once you can answer 1. you have the amount of PPM you add every | week... | > 3. How much water change ? | > If you change half of the water you can go up to twice the PPM | > computed above ! | > If you change a fourth, four times !! | > If you change a tenth, TEN times !!!!!! | | I change a different amount each week, depending on how bad the tank | looks/how tired a feel. | | No, I'm NOT intentionally trying to make this harder... Suppose you change 25 l every week and that it is the ONLY K source you can have no more than 5 PPM of K in your tank what is little ! | | > 4. Clearly staining on the glass shows too much of dissolved things in | the tank... | | The only thing staining my glass is green spot algae (and some spill | marks on the outside...). I speak of spill marks outside but made on the vertical glasses with tank water... They should be barely noticeable ! | | William | Philippe

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