Dry Fert help - The Planted Tank Forum
 
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post #1 of 8 (permalink) Old 11-20-2006, 06:00 AM Thread Starter
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Dry Fert help

Iv never used dry ferts and I have used the search and every time I just get my self confused. Besides the fact I more then likly passed the good post's.

So what ferts would I need for my heavily planted 55 gallon??
And how do you now how much??
Also do you vary the amount every week or do the same amount of ferts weekly??
Do you add ferts weekly or monthly?

I have a 2x 54 Watt light [12k each] and a 40watt light. So I believe its atleast medium lighting.
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post #2 of 8 (permalink) Old 11-20-2006, 06:34 AM
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Well, you can get the answers at Rexgrigg.com on dosing.
But here is a quick breakdown. There are micro (trace) elements and macro nutrients (such as nitrates, phosphates, calcium, potassium etc. that plants need. Some are usually in the water column such as calcium.

If its a medium light tank you might get away with just some potassium and trace elements every once in a while, depending on your fish load. If you feed enough fish, their extra food will take care of the phosphates and their excrement will cover the nitrates. You can buy all of these ferts on the cheap from a fellow hobbyist who sells mostly as a service, not for much profit - Greg Watson.com. His trace mix is called CSM+B. The other dry ferts are sold in one pound amounts. One pound of potassium sulfate will last a fellow a long time. I use to dose it around 1.5 teaspoons per 50 gallons of change water. Most of this is on Rex Grigg's terrific site.

And one needs to know about their water parameters, light wattage/gallon etc. to dose correctly. You'll need to test for nitrates and possibly phosphates. You might get away with just doing the potassium at water changes and adding a little bit of a trace mixture once or twice a week. It all depends on the amount and duration of light and if you have pressurized CO2 or not... Hope this helps and remember, better to under than over dose ferts. Just watch the plants.





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post #3 of 8 (permalink) Old 11-21-2006, 01:23 PM
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12K is pretty high for a planted tank.

Are you providing co2 at all? That may be more important than getting fertilizers in the tank.
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post #4 of 8 (permalink) Old 11-21-2006, 04:59 PM
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according to this thread: https://www.plantedtank.net/forums/wa...=dosing+sticky

you will need:
40~60gal
50% H20 change-weekly
1/2 Tsp KN03 3x a week
1/8 Tsp KH2P04 3x a week
1/8 Tsp K2S04 3x a week
10 ml Trace 3x a week
2-4 ml Fe/Iron 3x a week (optional)

you want to dose the macros (Nitrate, Phosphate, Potassium) on one day, then the trace mix (and optional extra iron) the next day. They don't mix, so don't do them together.

Schedule:
Sunday: waterchange, dose macros
Monday: trace
Tuesday: macros
Wednesday: trace
Thursday: macros
Friday: trace
Saturday: relax and watch the fish!

I just dump the dry ferts in the tank at the same time I feed, so it's extremely easy and quick to do. Get yourself a python or similar device so waterchanges are also super-easy to do (makes it more likely to actually happen). Using a bucket almost ensures that waterchanges will not happen on schedule.
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post #5 of 8 (permalink) Old 11-22-2006, 01:42 PM
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Newbie here too...Have not started any dry fert myself yet, but just curious:

What is the Tsp unit here? Is it teaspoon or Tablespoon?

(In my cookbooks, teaspoon is usually="tsp" and Tablespoon="Tsp")

Thanks,
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post #6 of 8 (permalink) Old 11-22-2006, 01:58 PM
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It's teaspoon (boy I hope it is )
Tablespoon is usually Tbsp.

But you are correct that the teaspoon abbreviation has a lower t, and Tablespoon has an upper T.

Walter

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post #7 of 8 (permalink) Old 11-22-2006, 02:28 PM
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Thanks Walter for clearing this up...

I actually look around that post for awhile but did not find any clear reference on the unit abbreviation...
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post #8 of 8 (permalink) Old 11-22-2006, 02:33 PM
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Tsp=Teaspoon
Tbsp=Tablespoon

Craig

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