Excel and fert dosing for low-medium light tank - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 07-18-2014, 05:00 PM Thread Starter
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Excel and fert dosing for low-medium light tank

Can I use excel and ferts as a replacement for co2? I know I probably wont get the same results as if I were using co2. Does anyone know of any article on how to dose using these chemicals?

I have a 38 gallon tank with a Current LED+ light and I was going to use eco complete for a substrate. I can't afford a co2 set up so I'm looking for another way of doing things to get better growth.

I have a moderate understanding of dosing ferts but I'm not familiar with excel. I know it's liquid carbon and I just don't know what to expect from it.
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post #2 of 5 (permalink) Old 07-18-2014, 06:06 PM
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Fertilizers are completely different from CO2, so you cannot use it to "replace" CO2.

Excel acts as a CO2 substitute, however.

Regarding dosing, there are various fertilization regimens that are different depending on the amount of maintenance you wish to do.

For Excel, following the recommended doses is usually what most people do.

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post #3 of 5 (permalink) Old 07-18-2014, 06:15 PM
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Excel cannot exactly replace CO2.. like Darkblade48 has already mentioned, it's a substitute. It will still help plants in conjunction with some bit of fert dosing, so it's a bit better than having no real co2 at all. And it will help control some algae.

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post #4 of 5 (permalink) Old 07-18-2014, 08:01 PM
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Try to find if Current has a PAR chart on that light. You will get more acurate answers if you can state what the par is at the sub in your tank.
Excel works better when used daily. CO2 is present in most water. We add to it with
CO2 or Excel. If the light was the motor of a car, then Oxygen and gas are the CO2 and ferts. Without almost equal parts of each it will hurt the plant growth.
Many low light tanks rely only on that CO2 which is normally found in the water.
As you raise the light you need to raise the other two also.
The amount of plants also determines how much of each is needed as does the type of plants like regular growth/med growth/fast growth.

The shortest distance between any two points is a straight line...in the opposite direction...
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post #5 of 5 (permalink) Old 07-18-2014, 10:49 PM
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I agree with what's been said so no need repeating it. Excel or glutaraldehyde commonly as sold as metricide works well. Dosing the recommended amount daily is sufficient.

For a fertilizer regimen, I would recommend EI. It provides non-limiting nutrients which is the only way to eliminate deficiencies. The only drawback are the water changes. If you don't mind doing weekly water changes that's the way to go. It can be modified for monthly water changes but requires a little more thought than following a basic dosing plan.

Here are a couple of posts I made explaining non-limiting nutrients as well as a list of doses for most tanks.

The EI Concept explained
Dry dosing and Nutrient Solution Recipes
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