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Discussion Starter · #1 ·
About 6 months ago I set up my aquarium again after a 2 year "break". So far I have just been using my old lights that were stored for the 2 years. Before that they were only used for a few months. I have been battling the algae for the entire six months with no luck. It is getting critical and if I don't get this taken care of it may mean goodbye to my planted tank. Oh the algae is green thread algae...I think.

Specs: 37 gal
Lighting: 2 x 55 watts
CO2: Pressurized 20-30 ppm
Ferts: EI method
 

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Discussion Starter · #3 ·
Thanks for the tip. I dropped the lights down to about 8 hours a couple days ago while doing a water change and it seems like it has helped. There is still some stiff algae growing on some driftwood that my SAEs won't touch. My amanos aren't touching it either. Another question. Could old dry ferts cause algae? I am currently dosing some dry ferts with the EI method but they are about 4 years old. Is it time to purchase new ferts?
 

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Discussion Starter · #5 ·
Ya, I didn't think it would be the fertilizers. I may have just figured out my problem them. I have gone through so many options and scenarios that I feel like a detective. Anyway, I have been using water from our kitchen faucet for water changes, the only faucet in the house that isn't hooked up to our water softener. Anyways, it is freezing here and the tap water is about 55 degress and I've been using the hot water to bring the water to room temp quicker. Well, the water heater comes AFTER the water softener and I've been getting all those wonderful chemicals and such that come from the softening salt. Does this make any sense? Could the water from a water softener cause algae?
 

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Discussion Starter · #7 ·
I'm fairly sure it's not the lights, I lowered them down to 8 hrs from 10. Not a lot for the just under 3 wpg that I have. I've also been dosing Potassium Nitrate in the EI method. I dose KNO3, Plantex, and monopotassium phosphate 3 times weekly with a weekly water change.
 

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Discussion Starter · #9 ·
Good thought. I'd say that it is moderately planted. Here is my dosing schedule. Does this look right?
1/4 teaspoon KNO3 3x Weekly
1/16 tsp. Plantex CSM+B 3x
1/16 monopotassium phosphate 3x

plus 50% water change once a week.
 

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Discussion Starter · #13 ·
I'll measure it today. I already have a nitrate test kit. Perhaps I need to dose every other day. I'll let you all know what the test reads. Possible this can help someone else in the future.
 
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