Daitoms and Brown Hair Algae - The Planted Tank Forum
 
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post #1 of 7 (permalink) Old 09-28-2019, 01:46 AM Thread Starter
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Daitoms and Brown Hair Algae

Hi Ya'll,

I come to you for the first time in a while for advise on how to deal with diatoms and brown hair algae in my new 5gal heavily planted tank.

These are my specs
tank: 5gal
Light: High (8 hours)
CO2: Injected (10 hours)
Ferts: Seachem "EI" calculated using rotala butterfly calculator (first time using EI)
Ammonia: 0ppm
Nitrite:0ppm
Nitrate: 5ppm
pH: 6.5

I understand that this occurs in new tanks, but I'm having trouble keeping the brown hair algae in check. It seems to grow overnight in thick tufts that cover the entirety of my montecarlo carpet in the low lying areas of the tank. Could my EI dosing schedule and amounts be the problem? I understand that imbalance of nutrients, light and CO2 can cause problems. I've reduced photoperiod and light intensity. I also increased CO2 and flow above the problem area, but somehow the problem got worse.

I am frustrated because I was able to start and keep a well planted high tech tank with very similar specifications without crazy algae or diatom growth. The difference this time may be water source and my EI dosing schedule. I used to only dose small amounts of Seachem flourish in my old tank (I really miss that well behaved tank).

Any help would appreciated to at least calm my frustration.

Thanks a ton!
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post #2 of 7 (permalink) Old 09-28-2019, 02:04 AM
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Dosing Seachem what to EI levels?
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post #3 of 7 (permalink) Old 09-28-2019, 02:14 AM Thread Starter
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I am dosing Nitrogen, Phosphate, Potassium, and Flourish
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post #4 of 7 (permalink) Old 09-28-2019, 07:19 AM
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Usually to much light and/or to high a dosing level for tanks planting density or type of plants your keeping. What plants do you have?

What light and intensity itís set to?

Picture of whole tank?

Water change amounts and schedule?
Dosing amounts and schedule?
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post #5 of 7 (permalink) Old 09-28-2019, 04:32 PM Thread Starter
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Plants:
Rotala Macandra,
Anubias Nana Petite
M Montecarlo
Reinikii Mini
Alternanthera reineckii 'Mini'

rotala wallichii

Dosing Schedules
Nitrogen: 2.2ml 3x
Phosphorus 6.1ml 3x
Potassium 3ml 3x
Flourish 1.2ml 3x

I do a 50% water change at the end of the week.

My light setting is set to 25%.
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post #6 of 7 (permalink) Old 09-28-2019, 08:56 PM
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1st flaw I see is your figuring dosing on 5gal, your tank doesn’t hold 5gal water once you subtract for substrate and that big piece of wood. Figure on 4gal for your tank which means you’ve been overdosing by 20% 3 times a week.

Take your current dosing and multiply x.8 to get correct max dose you should be doing. I think you’d actually be fine with less than that going by plant choices and would multiply x.6 as starting place and work up from there. Will take a few weeks to turn around so do .6 for a while then once algae goes away start gradually raising level, when you see algae coming back know you’ve gone to far and back off. Your schedule is fine as is.
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post #7 of 7 (permalink) Old 09-29-2019, 05:19 PM Thread Starter
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Got it. I will decrease dosing volume. Thanks!
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diatoms, fertilizer, high tech, nano

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