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Old 10-30-2006, 10:59 AM   #1
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Should I be dosing this tank - Now with exciting Algae Pics!

Hey all,

Tank description is in the "my info" tab. Should I be dosing ferts in this low light tank? I have gotten some Flourish comprehensive. Should I dose this weekly, biweekly? As for the amount, should I stick with the recommendation on the bottle? TIA
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Old 10-30-2006, 11:06 AM   #2
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Re: Should I be dosing this tank

Quote:
Originally Posted by Vmax911
Hey all,

Tank description is in the "my info" tab. Should I be dosing ferts in this low light tank? I have gotten some Flourish comprehensive. Should I dose this weekly, biweekly? As for the amount, should I stick with the recommendation on the bottle? TIA
are you injecting CO2?

Are you noticing a deficeny?

what are your current NO3 and PO4 reading?
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Old 10-30-2006, 11:16 AM   #3
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I would recommend dosing the Flourish Comprehensive and Potassium after your water change. Dose enough of the Flourish Comprehensive to get 0.1-0.2 fe and enough Potassium to get 10-20ppm of Potassium. If you check in the Stickies, the Fert one has some nice calculators to help you figure out how much you need to dose to get the needed levels.

You shouldn't need CO2 with this amount of light, and it would only be necessary to dose Nitrate and Phosphate if they start to bottom out.
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Old 10-30-2006, 11:19 AM   #4
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How long have you had the tank and what is leading you to consider dosing ferts? I guess I am wondering what you are trying to fix, adjust or avoid.
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Old 10-30-2006, 02:29 PM   #5
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Here's the current stat's of the tank (from the AP tests I have):

Ammonia and Nitrite: 0
Nitrate: 10
pH: 7.9
GH: 3 degrees
Kh: 6.5 degrees

I am not using CO2 injection, tank has been running 5-6 weeks. I've had a few plants in since the beginning, but got in a lot more about a week and a half ago. I have several kind of algae appearing (BBA, green hair, green in general, and all present before I added the large bunch of plants). Most thing I read about algae says to either up CO2, which I don't have, or do something with dosing. However, these threads are usually referring to med-high light tank with CO2 injection, which doesn't correspond to my setup.

I don't want algae to spread (there's not a whole lot right now) and I want to make sure my plants stay healthy.
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Old 10-30-2006, 03:26 PM   #6
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Quote:
Originally Posted by Vmax911
Here's the current stat's of the tank (from the AP tests I have):

Ammonia and Nitrite: 0
Nitrate: 10
pH: 7.9
GH: 3 degrees
Kh: 6.5 degrees

I am not using CO2 injection, tank has been running 5-6 weeks. I've had a few plants in since the beginning, but got in a lot more about a week and a half ago. I have several kind of algae appearing (BBA, green hair, green in general, and all present before I added the large bunch of plants). Most thing I read about algae says to either up CO2, which I don't have, or do something with dosing. However, these threads are usually referring to med-high light tank with CO2 injection, which doesn't correspond to my setup.

I don't want algae to spread (there's not a whole lot right now) and I want to make sure my plants stay healthy.
ok BBA suggest CO2 and if you PH and KH test are right you are not getting much CO2 (not even 3 ppm) to inhibit BBA you are going to have to get it above 30 ppm

green algae could mean a NO3 - PO4 issue

i would not trust the accuracy of you kits too my NO3 could Easily be 0
i would pick up a phosphate test kit too and post those results

try to idea the "green Algae" for us, then can better pinpoint the cause
use this link http://www.plantgeek.net/article_viewer.php?id=9


according to you info you have about 1.3 wpg light, i do not think you are running through the ferts that fast, but you may need to start dosing some... "green" algae tells me you are running low on something and BBA tells me you need more CO2 (might be as easy as adding more bottles if it is DIY, i run 6 on my 75 and am getting good co2) could probably get away with dosing excel at your light level.

anyways my suggestions...
1) pick up a phosphate Test kit and post results
2) ID "green" algae" with link above and post it
3) look into adding more CO2 to fight BBA
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Old 10-30-2006, 03:40 PM   #7
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JDogg, I think you need to reread the OP's post. We're looking at a low light tank without CO2 injection, so the 3ppm of CO2 makes sense.

In this situation we need to make sure that none of the nutrients are bottoming out and ensure that there is good circulation so that the plants are all getting access to the necessary nutrients. I'd start with the current and dosing the traces and Potassium. Give it a few weeks. If you're still seeing problems then you'll need to look at Nitrates and Phosphates.
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Old 10-30-2006, 03:49 PM   #8
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Quote:
Originally Posted by Purrbox
JDogg, I think you need to reread the OP's post. We're looking at a low light tank without CO2 injection, so the 3ppm of CO2 makes sense.
.
my bad, i was not aware that 3ppm was going to be enough for fighting BBA at the light level, please disregard then
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Old 10-30-2006, 03:54 PM   #9
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It's not so much that ambient levels of CO2 (3ppm) are enough to fight BBA, but rather that these levels aren't causing the BBA. It's more the low fluctuating levels of CO2 (like commonly found with DIY CO2) that often cause BBA. If the CO2 is steady and low or high and fluctuating you aren't very likely to see BBA, it's just when you combine low and fluctuating that it becomes such a problem. BBA can be caused by other deficiencies, which is what we need to look into with this situation.
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Old 10-30-2006, 05:19 PM   #10
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Well, I just started dosing Flourish Comprehensive. Should I give that a couple weeks and see where it leads? Should I dose weekly, twice a week, or only after a pwc (which would make it weekly)?
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