What is causing this algae? - The Planted Tank Forum
 
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post #1 of 12 (permalink) Old 08-10-2014, 07:02 PM Thread Starter
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What is causing this algae?

My dirted 55g tank has been set up for a few months now and I've had this algae for most of it. The green spot algae is new but the slightly fuzzy white algae(might be GHA but it seems a bit to light colored...looks very similar though) has been there for awhile. I have a 3 nerites and a bunch of Malaysian trumpets. Ammonia and nitrate are both low, I am unsure of phosphate. I dose with 2 capfuls of seachem flourish a week(not excel). Tank has 1 inch of dirt capped with 1 inch of pool filter sand. I do a weekly 30-40% water change. Filtration is 1 75g biowheel and one 100gph internal filter to add flow to the other side of the tank. Lighting is 1x finnex ray 2 led. I added some DIY co2 but it didn't seem to make much of a difference. Do I have too much lighting? what could be causing my algae problem? The plants are still growing well...

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Last edited by visionist; 08-12-2014 at 05:45 PM. Reason: pictures
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post #2 of 12 (permalink) Old 08-10-2014, 07:12 PM
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C02 or lack there of is your problem. DIY C02 is very inconsistent especially in a large tank like that. Also low ammonia and nitrite suggest a mini cycle.


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post #3 of 12 (permalink) Old 08-10-2014, 07:24 PM Thread Starter
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C02 or lack there of is your problem. DIY C02 is very inconsistent especially in a large tank like that. Also low ammonia and nitrite suggest a mini cycle.
Tank is most definitely cycled, I just say they are both low since I don't test terribly regularly. Last time I tested ammonia was probably 2 weeks ago and it was 0.
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post #4 of 12 (permalink) Old 08-11-2014, 02:24 PM Thread Starter
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Any other input?
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post #5 of 12 (permalink) Old 08-11-2014, 10:54 PM
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Do you have pictures you could post?
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post #6 of 12 (permalink) Old 08-11-2014, 11:39 PM
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What size is the tank ?

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post #7 of 12 (permalink) Old 08-11-2014, 11:59 PM
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Could be a lack of CO2, But how long is your lighting cycle? Any sunlight that hits the tank?
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post #8 of 12 (permalink) Old 08-12-2014, 03:40 AM
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Not sure about this part but the appearence of the tank looks as if it's a 75g tank.
That light is too close or if it can be adjusted by a dimmer switch turned down some
or get rid of the slow growing plants. The light being too close is only if the plants are slow growing because their leavers last much longer than faster growing plants and under high light they will accumilate algae of the type you see on them.
Also if there are more than just that one plant leaf which has holes in it you likely don't have enough Potassium in what you are dosing for ferts as usually that is a sign that the plant is actually canibalizing it's older leaves for the Potassium which it needs but is not getting.

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post #9 of 12 (permalink) Old 08-12-2014, 05:09 PM
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The tank light being on for way to long 7 hours is enough.

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post #10 of 12 (permalink) Old 08-12-2014, 05:27 PM
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I feel like the spot algae is probably from a little too much light for the co2/ferts. I usually see it go away with some added phosphate, but that's with higher lighting and pressurized co2.


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post #11 of 12 (permalink) Old 08-12-2014, 05:41 PM Thread Starter
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Quote:
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Do you have pictures you could post?
The imgur.com link is an album of pictures.

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What size is the tank ?
Tank is a 55g

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Originally Posted by Xzavier247 View Post
Could be a lack of CO2, But how long is your lighting cycle? Any sunlight that hits the tank?
No sunlight hits the tank. My lighting cycle is 7 hours.

Would adding floating plants help since I can't hang this light? The scarlet temples are the only plants with holes in it, my big amazon sword has no holes at all. Since the tank is dirted would the scarlets not get enough potassium from the dirt or the flourish?
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post #12 of 12 (permalink) Old 08-12-2014, 05:57 PM
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Yes but I think mini water lettuce would give less problems than other floating plants.
The regular sticks up rather high. Frog bit has 12-14" roots when mature and doesn't get along/w HOB filters. Regular duckweed is a nightmare to be rid of and I have Giant duckweed so you only have dozens of plants multiplying each day instead of hundreds.
That was working out great till some of the regular found it's way into there from a plant I bought. Now I can't get it out as some always escapes notice and so returns.
You probably aren't low on Potassium.

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