Help with black spots on plants ! - The Planted Tank Forum
 
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post #1 of 4 (permalink) Old 07-26-2020, 07:37 PM Thread Starter
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Help with black spots on plants !

Hello !

My nano tank is new, maybe 3 months old. it's been through a couple of algae types up until now that went away but now i have this black spots on my leaves and it make me worry because it's not showing any sign of leaving.

so first of all, a pic: https://imgur.com/FNNQP1u (i know i also got a green one on the darker plant, but it's only on it and it seems it's not really making progress so i don't worry too much).

And now some info:

• 30 liter
• light 9 hours a day
• GH - 8
• KH - 5
• Nitrate around 30
• Phosphate - i try to keep it at 1 and i dose when it's dropping
• Potassium - don't have a test for that but i dose generously
• Iron - i dose daily, plants use up everything on the next day (i test it too)
• Water change once a week about 30-40%
• Trace - i dose every other day
• Also dose Excel daily
• no CO2

i use Seachem products,

that's all i think, let me know if you need more info!

and thanks !
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post #2 of 4 (permalink) Old 08-04-2020, 12:01 PM Thread Starter
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i read about spot solution with excel, would you recommended it in my case?

thanks!
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post #3 of 4 (permalink) Old 08-04-2020, 02:07 PM
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What type of light do you have. 9 hours seems like a lot with no Co2, obviously depending on the type of light.
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post #4 of 4 (permalink) Old 08-04-2020, 05:16 PM Thread Starter
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Quote:
Originally Posted by Aryanasdad View Post
What type of light do you have. 9 hours seems like a lot with no Co2, obviously depending on the type of light.
I use Chihirios Series A - A451, it got 7 light strength steps, i'm on step 4
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