Ordering Ferts tomorrow... - The Planted Tank Forum
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post #1 of 5 (permalink) Old 08-16-2012, 08:41 PM Thread Starter
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Ordering Ferts tomorrow...

Okay, I am FINALLY ready to order ferts. I started a thread back on New Years https://www.plantedtank.net/forums/sh...d.php?t=159608 asking about dosing amounts. This is what was decided:

1/4 tsp KNO3 once a week
1/16 tsp KH2PO4 once a week
1/2 cap Flourish twice a week (then 1/16 CSM+B when the Flourish Comp runs out)

I have a 30 gallon (36x12x16) tank. I have 4x15 watt screw in CFL bulbs retrofitted into a normal florescent hood raised 3 inches off the top of the tank. I later realized I had really high Nitrates (80-100 ppm). My tank is pretty well stocked and I was probably over feeding. I now have it at a consistent 30-40 (probably still high). Knowing that my Nitrates already sit above the recommended dosing amount I figure I dont need to dose KNO3. I still need the K though so I plan on dosing KH2PO4 and K2SO4.

Wet's Calculator says 162mg of KH2PO4 and 2.5g K2SO4 for EI low light/weekly dosing. I thought about adding a little Fe as well. My water is 4 dGH so I wasn't really planning on worrying about GH booster, should I?

So I planned on dosing the KH2PO4 and K2SO4 as recommended by the calculator on Mondays (50% water change on Sundays) and Fe and 1/2 cap Flourish Comp on Tuesday with another 1/2 cap dosing of Comp on Thursday. Does this sound good, or am I way off?

Thanks everyone!
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post #2 of 5 (permalink) Old 08-17-2012, 04:14 PM Thread Starter
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post #3 of 5 (permalink) Old 08-17-2012, 04:36 PM
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Just follow the EI dosing calc. Its pretty spot on

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post #4 of 5 (permalink) Old 08-17-2012, 05:50 PM Thread Starter
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Just ordered:

1 lb - K2SO4
1/2 lb. - KH2PO4
1/2 lb. - Fe 10%

Excited to the results!
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post #5 of 5 (permalink) Old 08-18-2012, 10:56 AM
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I just finished my site about dry salts fertilization: http://aquarium-fertilizer.com/
Hope, it'll be useful.

Check out my site about aquarium fertilizing:
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