Hair algae high tech tank... - The Planted Tank Forum
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post #1 of 12 (permalink) Old 05-19-2020, 08:46 PM Thread Starter
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Hair algae high tech tank...

Set up my 32g about a month ago. Full of plants. Great growth and pretty heavy plant mass I think. CO2 injection. Med/high light, according to a chart I used for my light, I'm at more than 110 PAR at the substrate. Ferts are Niclog macro/micro according to directions. 50% water change weekly with tap water using Prime. Substrate is Tropica. I did stop doing ferts since my last WC which was about 5 days ago. Plants still growing like crazy but not sure what nitrates are still so high. Not much fish load. I have 9 White Cloud Minnows and 5 Golden Pristella Tetras but algae was starting before I added the fish. I hate the thought I doing multiple WC's weekly but if that's what I have to do...that's what I'll do. I also thought about getting a small RO filter at least for top-offs but I really am only topping off about a gallon a week so I don't know if that would be worth it. Guess it can't hurt.

Ammonia 0
Nitrites 0
Nitrates 40
Nitrates tap water 5

That's all I have for parameters. I need to test the rest later. I had to get ready for work and figured nitrate would be most important for now. Anyways, seeing a lot of hair/string algae growing on the leaves of plants and on rocks and it's really starting to PMTFU. Also seeing some green algae on the glass.

Thoughts?





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post #2 of 12 (permalink) Old 05-19-2020, 09:01 PM
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First thing I'd do is cut back light intensity. Excel and peroxide are useful in your tool box if it persists, but bright lights and nutrients provide a hard combo to beat algae unless there's a ton of plant growth. With new Tropica soil, I'd expect your fert regimen could be cut back a bit as well, might explain some of your nitrates staying high.

Nothing good happens fast in an ecosystem.
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post #3 of 12 (permalink) Old 05-19-2020, 09:21 PM Thread Starter
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Growth is super fast. I can cut a stem half way down and replant and in 2 days both are back to the top of the water level. I did stop fertilizing for now. Lights are on for 8 hours. I'll cut the intensity back from 30% to 20% and go from there and see what happens. I continue not adding ferts for a while too and see how the nitrates react. Guess I'll throw in a 2nd WC during the week as well. PITA but guess it can't hurt. Not that big of a deal since it's only like 15 gallons of water.
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post #4 of 12 (permalink) Old 05-19-2020, 09:32 PM
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Don’t change frequency of your dosing, change the amount your dosing. Just like cutting intensity of light, cut the intensity of your dosing.
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post #5 of 12 (permalink) Old 05-19-2020, 09:32 PM
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First 3 months in soil tanks with bright light, algae has been a constant battle for me. It does subside, and a direct spray with Peroxide when the water level is low can help a lot. And obviously manual removal, which is easier with hair algae than most anyway.
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Nothing good happens fast in an ecosystem.
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post #6 of 12 (permalink) Old 05-19-2020, 10:52 PM
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I was able to get rid of hair algae real easy. I added the correct dose of Phosban to my canister filter the last time I cleaned it. Within a week the hair algae was gone. I do watch the feeding of the fish. Giving them just enough food. I then after feeding I Bush my hand thru my stem plants to keep the phosphate from the food settling on the plants in the tank.
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post #7 of 12 (permalink) Old 05-26-2020, 12:54 AM
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I've been struggling with hair algae myself. Looking forward to see what works out for you.
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post #8 of 12 (permalink) Old 05-31-2020, 04:14 PM Thread Starter
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Reduced light intensity and stopped ferts for a bit and it seems to be subsiding with no negative effect on plant growth. Things are actually getting out of control. I'm thinking about getting an RO filter at least for top offs. Water from tap is only 5ppm nitrates so I don't think that's really the issue but I don't want to add more nitrates through tap water when I do top offs...which is only a couple gallons of water per week. I may consider just going full RO water for water changes too if I am not able to eliminate the majority of the issue. I want to get some amano shrimp to help but I'd rather fix the problem, not just throw in some band-aids.

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post #9 of 12 (permalink) Old 05-31-2020, 08:09 PM
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Am I seeing mainly GDA? I don't think I see any hair algae. Glut won't affect GDA.

If this is the case, I'd first consider the possibility that CO2 is too low. Have you measured it with the pH drop test? If you end up raising CO2 and get an undesirable increase in plant growth, you can then try throttling growth back by reducing light intensity and/or photoperiod.
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post #10 of 12 (permalink) Old 05-31-2020, 10:17 PM
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I would trim the plants as it is causing water to stand still which leads to algae in that area. Simply putting your hand in the tank and move the water in the aquarium helps a lot. Especially and hour after feed fish so that any fish food does not dissolve in the water resealing
Phosphates cause hair algae.
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post #11 of 12 (permalink) Old 05-31-2020, 10:59 PM
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I have personally found that pretty much ALL algae issues can be avoided or fixed by reducing organics, increasing uptake, managing light and co2. Every hi-tech tank has N&P, what they don't all have is nuisance algae.


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post #12 of 12 (permalink) Old 06-01-2020, 03:43 AM Thread Starter
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Quote:
Originally Posted by EdWiser View Post
I would trim the plants as it is causing water to stand still which leads to algae in that area. Simply putting your hand in the tank and move the water in the aquarium helps a lot. Especially and hour after feed fish so that any fish food does not dissolve in the water resealing
Phosphates cause hair algae.
Did a big trim yesterday actually. The plants just grow crazy fast.

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Quote:
Originally Posted by Deanna View Post
Am I seeing mainly GDA? I don't think I see any hair algae. Glut won't affect GDA.

If this is the case, I'd first consider the possibility that CO2 is too low. Have you measured it with the pH drop test? If you end up raising CO2 and get an undesirable increase in plant growth, you can then try throttling growth back by reducing light intensity and/or photoperiod.
It's there. It's on some of the plant leaves and rocks though much of the stuff on the rocks has turned black and is dying off. I trim the worst leaves and remove so the plant can continue growing new healthy leaves. There's is some green algae on the glass too that wipes away easily. I took the pic before a trim and water change...should have taken it after.

As far as CO2, I'm still micro adjusting to keep the fish happy. When I first got them it was a bit high and I gassed them. Had to turn it off and run an airstone and actually remove some of the fish to a bucket with freshwater. My mistake obviously but everyone pulled through and are doing well. So now I'm just hesitant to bump it up too much to fast. I do need to check the pH drop and see where I am.


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