how do i kill green water algae? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 11 Old 11-18-2009, 12:33 PM Thread Starter
how do i kill green water algae?

i have a 65 gallon tank, with 96 watt bulbs, tank setup is 3 months old. this week ive had greenwater algae. i did a 50% water change and within a day it was back
i did another w/c and it was back wihin a day.
i tried algae destroyer, doesnt work

what can i do? i am unable to obtain fluorish excel to try..........
i have covered the tank in complete darkness today......

what else can i do? a uv sterilizer? i have a 9 watt available with powerhead

should i disontinue dosing weekly with seachem fluorish until this is cleared up? will it harm the plants with NO light everyday? my swords are thriving!

31 Betta Males
12 CrownTail
7 HalfMoon
5 DeltaTail
4 DoubleTail
3 Veil Tail


44 Betta Females
Round, Crown, Spade

65 gallon
55 gallon
35 gallon
2 - 20 gallon
4 - 10 gallon
16 - 1.5-2 gallon

MTS has struck, resistance is futile
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post #2 of 11 Old 11-18-2009, 12:41 PM
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Christina already PM'd me and I suggested a post here to gain insight from others with this issue. In the interim, I tracked down the following from a good source on algae information, which I'll cite to start things off. B.

Green unicellular algae will sometimes reproduce so rapidly that the water will turn green. This is commonly called an "algae bloom" and is usually caused by too much light like direct sunlight. An algae bloom can be removed by filtering with micron cartridges or diatom filters. UV sterilizers can prevent the bloom in the first place. Green water is very useful in the raising of daphnia and brine shrimp. Film algae Grows on the aquarium glass and forms a thin haze. Easily removed by wiping the glass. Considered normal with the higher light levels needed for good plant growth.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If youíre going to take it under your wing then youíre responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 11 Old 11-18-2009, 01:05 PM Thread Starter
i dont have direct sunlight on the tank.......just very high light from the lighting system

31 Betta Males
12 CrownTail
7 HalfMoon
5 DeltaTail
4 DoubleTail
3 Veil Tail


44 Betta Females
Round, Crown, Spade

65 gallon
55 gallon
35 gallon
2 - 20 gallon
4 - 10 gallon
16 - 1.5-2 gallon

MTS has struck, resistance is futile
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post #4 of 11 Old 11-18-2009, 01:08 PM Thread Starter
also, ive read that by adding seachems fluorish excel will help eliminate it because it adds needed co2........is this true?

31 Betta Males
12 CrownTail
7 HalfMoon
5 DeltaTail
4 DoubleTail
3 Veil Tail


44 Betta Females
Round, Crown, Spade

65 gallon
55 gallon
35 gallon
2 - 20 gallon
4 - 10 gallon
16 - 1.5-2 gallon

MTS has struck, resistance is futile
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post #5 of 11 Old 11-18-2009, 01:25 PM
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Read here about half way down:
James' Planted Tank - Algae Guide

Kindest Regards,
Amanda

Keeping fish its not a hobby it is a passion!

55 gallon, 44 gallon, one 20 gallon tank, three 10 gallon tanks, and a 2.5 gallon all with real plants.

I have MTS and there is no cure.

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post #6 of 11 Old 11-18-2009, 02:00 PM
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Quote:
Originally Posted by ChristinaRoss View Post
also, ive read that by adding seachems fluorish excel will help eliminate it because it adds needed co2........is this true?
Excel works (sometimes) on brush algae; I've not read it is good for green water. Wouldn't think so.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If youíre going to take it under your wing then youíre responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #7 of 11 Old 11-18-2009, 02:39 PM Thread Starter
thanks amanda, i read that before, was just trying to get a little more input here from anyone with personal experience

31 Betta Males
12 CrownTail
7 HalfMoon
5 DeltaTail
4 DoubleTail
3 Veil Tail


44 Betta Females
Round, Crown, Spade

65 gallon
55 gallon
35 gallon
2 - 20 gallon
4 - 10 gallon
16 - 1.5-2 gallon

MTS has struck, resistance is futile
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post #8 of 11 Old 11-18-2009, 03:58 PM
Check the color temp (10,000K, 5000K, etc ) of the bulb. i dont find 96W on 65G tank is too much. I ran at least 120W of specific flo lighting and/or over 150W MH+PC and other combos on f/w planted tank w/o issues.
Is this planted tank?

For now, completely black out the tank for few days other than feeding time. Check nitrate and phospahte level if possible.

Proper Water changes should be applied according to results of test when possible.
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post #9 of 11 Old 11-18-2009, 06:08 PM
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I'd also suggest a complete black out (cover with dark bedsheets or alike) for 1 week and then a HEAVY w/c. If you have decor in there like rocks, DW etc, take them out after the black out and seriously scrub them down (w/out any cleaners of cause).
If you have plants in the tank this will not kill them and it won't hurt the fish neither.

~ Life Is Too Short, Break The Rules, Forgive Quickly, Kiss Slowly, Love Truly, Laugh Uncontrollably And Never Regret Anything that Made You Smile.
Life May Not Be The Party We Hoped For, But While We're Here, We Should Dance. ~
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post #10 of 11 Old 11-19-2009, 07:51 AM Thread Starter
yes, i already blacked out the tank yesterday. I also installed a 9 watt uv sterilizer. Maybe it wont do much or maybe it will. But I figured it certainly couldnt hurt.

Yes, this is a planted tank, but, not heavy, theres a few swords and java fern in there that are absolutely thriving. I even have many daughters growing on the javaferns. The swords have grown about 10" in about a month. Right now there is only 3 mollies and 4 neons and 5 snails. I have sand for a substrate with some small river stones (dime size) over part of the sand in the back of the tank.

The lighting is full spectrum.I did a 75% w/c the day before I did the black out.

So, should I stop dosing liquid ferts until this is clear again?

Also, should I do another major w/c when its cleared up?
How do I then keep this at bay?

Do I need to replace both filter cartridges after this is clear?
Wont I lose beneficial bacteria?
Will I have to cycle again?

31 Betta Males
12 CrownTail
7 HalfMoon
5 DeltaTail
4 DoubleTail
3 Veil Tail


44 Betta Females
Round, Crown, Spade

65 gallon
55 gallon
35 gallon
2 - 20 gallon
4 - 10 gallon
16 - 1.5-2 gallon

MTS has struck, resistance is futile

Last edited by ChristinaRoss; 11-19-2009 at 07:54 AM.
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