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post #1 of 7 (permalink) Old 03-27-2018, 08:40 PM Thread Starter
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What is this stuff?

I have a brownish algae covering my anarachis and crypt undulata, and I don't know what kind it is. I don't think it's beard algae, but it has engulfed almost all of both of those plants, and is also beginning to overtake the water sprite. I attached a picture. I have a bristlenose pleco, 4 otos, and 3 amano shrimp in the tank, but none seem to touch it.
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post #2 of 7 (permalink) Old 03-27-2018, 08:42 PM
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Excel at 1.5 dose daily for 1week will kill it.
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post #3 of 7 (permalink) Old 03-27-2018, 08:58 PM Thread Starter
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Originally Posted by hani View Post
Excel at 1.5 dose daily for 1week will kill it.
Thanks for your reply! I've heard excel will kill shrimp and possibly melt val and anacharis. Do you have any experience with that it know it to be true? I'm relatively new to this, so I'm just trying to get informed.
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post #4 of 7 (permalink) Old 03-27-2018, 09:06 PM
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Excel will most likely melt your Anacharis and possibly Vals. It looks like BBA based on the reddish appearance of what I'm seeing on the Crypt and substrate. A close up picture of the affected plants would be useful.

Please tell us tank size, water change schedule and what %, light and how long light is on, if you're dosing ferts and if so, how much and of what. Your tank looks VERY bright, so I'm thinking light is going to be a key factor.
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post #5 of 7 (permalink) Old 03-27-2018, 09:16 PM Thread Starter
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Originally Posted by mgeorges View Post
Excel will most likely melt your Anacharis and possibly Vals. It looks like BBA based on the reddish appearance of what I'm seeing on the Crypt and substrate. A close up picture of the affected plants would be useful.

Please tell us tank size, water change schedule and what %, light and how long 9light is on, if you're dosing ferts and if so, how much and of what. Your tank looks VERY bright, so I'm thinking light is going to be a key factor.
It's a 29 gallon tank and I change 25% of the water every other week. I have not been dosing ferts recently although I've used flourish tabs in the past. The light is on for roughly 3 hours in the morning (6:00 am to 9:00 am) and 4 in the evening (4:00 pm to 8:00 pm) with an off period that is 7 hours in the day and 10 overnight; I read part of "Ecology of the Planted Aquarium" by Diana Walstad suggesting using 2 photo periods instead of one.
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post #6 of 7 (permalink) Old 03-27-2018, 10:37 PM
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I’ve pulled plants and stuck them in a vase for treatment with Excel to preserve all things meltable in my affected tank. Worked out great!
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post #7 of 7 (permalink) Old 03-28-2018, 04:46 PM
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Another option is to remove them, spray with 3% H202, let sit for a minute, then rinse them off and put them back. Might need more than one treatment.

However, you need to figure out what is causing such nasty algae. The H202 treatment will kill what's there but won't solve the problem.

Unfortunately the photos are too blurry fo me to guess the specific kind of algae. It looks like its all over your substrate, too, so you've definitely got problems. Clean out as much of it as you can.


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