80 gallon how much dry ferts - The Planted Tank Forum
 
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post #1 of 10 (permalink) Old 07-27-2012, 01:29 PM Thread Starter
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80 gallon how much dry ferts

been thinking about dry ferts how do i calculate how much i am going to need
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post #2 of 10 (permalink) Old 07-27-2012, 02:26 PM
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post #3 of 10 (permalink) Old 07-27-2012, 04:07 PM Thread Starter
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isnt this for pressurized co2 tanks
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post #4 of 10 (permalink) Old 07-27-2012, 05:46 PM
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Then can you add some more details of exactly what you are asking? Also depends on the specific ferts you plan to use, there are tons of calculators out there. And anything you see out there is pretty much "advised" values, but you have to work out what your ideals are.

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post #5 of 10 (permalink) Old 07-27-2012, 06:06 PM
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I am sure this is discussed further along in that thread. Instead of dosing three times a week just dose once a week which comes to about 1/3 the amount suggested for a CO2 enriched tank.
60~80gal - this is about 1/3 of what goes into a CO2 enriched tank.
50% H20 change suggested for a CO2 enriched tank weekly may be optional and may be smaller
3/4 Tsp-KN03 1x a week
3/16 Tsp-KH2P04 1x a week
1 Tsp-GH booster once a week and only needed if your water is softer than 2 GH or so.
5ml 3/16Tsp-Trace 1x a week
4-8ml-Fe/Iron 1x a week

And this is only a starting point. If you notice positive changes then you know the stuff is helping. If not then you were either fine already or need to adjust lighting or maybe need more of the stuff.


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post #6 of 10 (permalink) Old 07-27-2012, 06:38 PM Thread Starter
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so an imbalance or less ferts isnt life or death of the plants do you use dry ferts?
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post #7 of 10 (permalink) Old 07-27-2012, 06:52 PM Thread Starter
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also if my chelated trace mix adds iron do i need more
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post #8 of 10 (permalink) Old 07-27-2012, 10:43 PM
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I didn't use iron for years but now have some so I am trying it without seeing much change in the plants. Chances are you don't need it for your non CO2 enriched tank.

I dump the fertilizer in dry, many people prefer to mix it in water. If you are adding it to water change water then easy enough to measure it once a week and mix with a little water before adding to the tank.

Usually fertilizer improves plant growth. They will stay alive but be covered with algae without it if there is too much light and not enough of the major nutrients. I had a very dramatic case in my tank long ago. It was afflicted with such bad green water I couldn't see an inch into the tank. Adding 1/2 teaspoon of potassium nitrate each morning I could see the tank was clearer each morning and in 4 days the tank was perfectly clear. The EI system is meant to ensure the plants have some nitrogen, phosphorus and potassium and the micronutrients like iron available at all times.


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post #9 of 10 (permalink) Old 07-28-2012, 03:29 PM Thread Starter
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im really not getting this, maybe its because every tank is different whether it be high light and co2 or no co2, i have a 80 gallon uk tank wiv no co2 and dual t5s what would u reccomend dosing?
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post #10 of 10 (permalink) Old 07-28-2012, 04:49 PM
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I did a large water change on my 10 gallon tank each week and put the powders in the new water. I do not know if that is suggested for non CO2 tanks, that is just what I did. If you do that then put these dry powders into your change water weekly. If you chose to do smaller changes or no changes then perhaps cut the amounts in half again.

3/4 Tsp-KN03
3/16 Tsp-KH2P04
1 Tsp-GH booster if your water is soft only
3/16Tsp-Trace
4-8ml-Fe/Iron if you have it and want to try it


Perhaps putting the doses I suggested into this nice calculator would reassure you.
http://calc.petalphile.com/

You are only adding 7.9ppm nitrate, 1.9ppm phosphate and .17ppm iron once a week.


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