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Re: [APD] Aquatic-Plants Digest, Vol 30, Issue 33


CO2, CO2 and CO2.
You can follow the example I have on my web site for the 20 gal
tank dosing.

Just scale up.
You do not have Gas tank CO2 but have a 175 MH light?
That is the tail wagging the dog.

Cheap light= good CO2===> much wiser.
Get rid of the MH, or upgrade the CO2.

You will need to do some CO2 work/testing, a pH pen/monitor will
do well for this and is easy to address once you know what the
KH is of the tank(this does not need to be tested much, weekly
is fine)

The other alternative: less light, like 2-3w/gal.
You simply do not need the high light.

I'm not sure why you complicated the dosing routine so much, I
add 4 things at most, 3 are dry powders, and then some TMG.

These are added 3x a week or so.
See the example in the EI article.
Stick with that, fix the CO2 or fix the light issue.
You are not going to have much success otherwise given your

Tom Barr


> Message: 4
> Date: Wed, 15 Feb 2006 21:40:55 -0400
> From: Matthew Jarsky <studio at cheapo_cc>
> Subject: [APD] Dosing Ferts - Help Needed.
> To: "Aquatic-Plants at Actwin_Com" <aquatic-plants at actwin_com>
> Hello!
> I have been keeping a planted tank for years now, but I really
> haven't
> had much luck with it except for right at the start (2000) and
> very
> recently (last 3 months). I have fumbled around, trying to get
> by
> without test kits and I thought I was finally going to succeed
> when the
> estimative index method appeared on the scene, but I am still
> having
> trouble figuring out how much of which nutrients to dose.
> This is my set-up (img: http://tinyurl.com/9oske) :
> 33 gallon tank
> 175w metal halide pendant (img: http://tinyurl.com/9sgwa)
> Fluval 304
> 150w heater
> Fluorite substrate
> 35-30% water change weekly
> I don't test these days, but when I did, my pH would get as
> low as 6.8
> when the yeast & sugar were fresh.
> The tank has suffered from hair algae and a tiny bit of BGA.
> At the last
> waterchange I upped the doses of things a bit and the plants
> seem to be
> doing better and the algae has perhaps eased off.
> Using Chuck Gadd's calculators, I have figured out my weekly
> dosing as
> follows:
> KNO3: 1 ml (target: 5ppm Nitrate)
> K2SO4: 5.5 ml (target: 20 ppm K)
> MgSO4: 12-25 ml (target: 5-10 ppm Mg) - I have been dosing
> about 15 ml.
> On top of that I add:
> 1 cap of Seachem Flourish
> 1 cap of Seachem Iron
> 1 ml hydroponic trace mix.
> I have two questions. Firstly, is that about right for the
> weekly dose?
> And secondly, what should I be dosing through the week?
> Thanks in advance.
> Matt

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