algae id: diatom or Rhizoclonium?
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Old 08-22-2011, 07:00 PM   #1
kuro
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algae id: diatom or Rhizoclonium?


Hi this tank has been up for about 3 weeks now and i can't figure if this is diatom or rhizoclonium. My plant are growing fine but that because i spend several hrs each day cleaning the algae off the plants. My HC is getting destroy by the algae because everytime i clean the algae it pulls the HC off the substrate if i don't clean the HC the brown algae will completely smother them.
I dose about 5ppm nitrate, 5 ppm of potassium, and 3 ppm of phosphate every other day and 0.75ml of flourish when i don't does macro, Co2 lime green 4dkh drop checker. I dose high Phophate but I'm still getting some Green spotted algae which i don't really mind.


By tinyen at 2011-08-22


By tinyen at 2011-08-2


By tinyen at 2011-08-22
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Old 08-22-2011, 09:33 PM   #2
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Bump??? Inquiring minds?
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Old 08-22-2011, 09:35 PM   #3
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looks similar to what ive had.
i dosed double recommended of flourish excel and 3 day black out with water change everyday.
it was very effective at killing it.
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Old 08-22-2011, 09:38 PM   #4
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I have this in my iwagami, i move my powerhead and its almost gone. This algae seems to be based on low flow. Also a toothbrush is the best way to remove from HC IME.
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Old 08-22-2011, 10:45 PM   #5
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I did a 4 day black out last week and overdose with excel this algae didn't even budge. I did water change every 3 days with tap which has almost no trace of silicane. however I switch to ro/di last two weeks and reduce the fertilizer and this algae still doubling it growth each day, light only on 4 hrs a day. I might just let it grow as much it want this week than remove as much algae I can and do 50% water change
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Old 08-23-2011, 12:17 AM   #6
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This is diatom most likely. Get some amano shrimps.

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Old 08-23-2011, 01:27 AM   #7
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I thought it was diatom too but my Otto have not touch them
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Old 08-23-2011, 02:00 AM   #8
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i have amanos and they dont touch it. Im not surprised otos dont though.. they are pretty fussy.
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Old 08-23-2011, 06:46 PM   #9
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I've had some luck dosing H2O2. Killed it pretty quickly and my water looked like soda for a day. I'm not really sure if it'll come back yet, I'm still trying to remove all the death stuff from my driftwood.
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Old 08-23-2011, 07:45 PM   #10
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how much H2O2 did you dose per gallon? i never dose H2O2 so i don't know the amount
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Old 08-24-2011, 01:50 AM   #11
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There are 2 kinds of diatoms, its been posted before.
I think oto's are partial to the slimy film variety, and not the filamentous variety.
Amano's should eat this though no matter what it is.
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Old 08-24-2011, 03:26 AM   #12
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I'm not really sure... i didn't exactly measure, but probably 1/4 cup for 20 gallons? you could probably use less if you squirt it directly onto the algae using a syringe.
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Old 08-24-2011, 07:11 AM   #13
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Not sure why h2o2 killed it.
Anyway, I've used cups and cups of h2o2 in a 20 gallon before and never had ill effects other than some clouding.
I read on this forum about someone using it and then losing a fish, but the fish was old, and I don't believe it was related, although the owner certainly did.
If you're spot treating, be sure to turn of the filter.
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Old 08-26-2011, 01:24 AM   #14
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appears to be diatoms, unfortunately the form has very little information on managing these guys. There are a number of "best practice" theories tho if you search the posts...
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Old 08-26-2011, 02:04 AM   #15
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Indeed diatoms.

Remove as much as you can manually while doing a 50% water change.

Add in 15 Amano Shrimp per 20 gallons and it will clear up over night. Do another water change, and you will be set.
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