Getting plants to thrive/killing algae (dosing with Excel/Thrive daily) - Page 2 - The Planted Tank Forum
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post #16 of 24 (permalink) Old 04-10-2019, 06:35 PM
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You increased ferts and things got worse, right? So go the other way. Fresh aquasoil doesnt need anything close to Thrive at the recommended dose, which is basically EI.

A low tech tank with fresh aquasoil definitely doesnt need that much. Half strength 2-3x week should be plenty, or if it gives a "low tech dose" do that.

Otherwise the problem is most likely a deficiency of light or co2.

Forget KH, that's the aquasoil doing its thing. GH, which is Ca and Mg, should be fine if 8.4 is correct

Double the Excel and make sure to dose it daily just prior to lights on
Rotala Rotundifolia doesn't like an overdose of Excel(maybe you need more than 2X dose(not sure) it leads to downturned small stunted new growth as well as white patches on the leaves. How many other plants don't like overdoses of Excel?


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post #17 of 24 (permalink) Old 04-10-2019, 06:56 PM
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Rotala Rotundifolia doesn't like an overdose of Excel(maybe you need more than 2X dose(not sure) it leads to downturned small stunted new growth as well as white patches on the leaves. How many other plants don't like overdoses of Excel?
As someone who ran two 75s with med-high light, no CO2, dosing straight Metricide at 2.5x Excel dose, which is about 4x Excel, for over two years, I can say - not many.

Vals mainly, but they'll come back adjusted to it. Anacharis is supposed to not tolerate it. Dont think Rotalas should have any problems unless we're talking about a 10x dose to kill algae like some folks do. At least I never saw it personally
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post #18 of 24 (permalink) Old 04-10-2019, 07:00 PM
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I've been doing this for over 10 years and never saw any of the more common Rotala species sensitive to 2x excel treatments.


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post #19 of 24 (permalink) Old 04-10-2019, 07:17 PM Thread Starter
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@Asteroid @burr740 I've seen Excel be hard on my anubias plants. Only one survived, so I'm not sure if I overdosed Excel in general or if it was too much Thrive.

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post #20 of 24 (permalink) Old 04-10-2019, 07:23 PM
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It wasnt the Excel. This one of the aforementioned tanks getting roughly a 4x daily dose


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post #21 of 24 (permalink) Old 04-10-2019, 07:35 PM
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Anubias are pretty tough. It would take an extreme overdose to melt those leaves.


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post #22 of 24 (permalink) Old 04-10-2019, 08:05 PM
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Google informs me that anacharis is Swahili for anus... but I was going to say I've done single doses of roughly 2x metricide on plenty of low tech tanks with anarchis and it's never stopped it from growing like cancer. Though I will admit I never cared about how good the anarchis was looking in those tanks as long as it was green, so maybe I just wasn't paying attention.

Anubias does develop holes if you spot dose it with glut with the filters off... but I've also never had a problem dosing the water column with it in a tank either. Or rotundifolia for that matter...

I've never dosed it daily though if that matters.
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post #23 of 24 (permalink) Old 04-10-2019, 08:22 PM
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Lol, get off my Anacharis already!
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post #24 of 24 (permalink) Old 04-10-2019, 09:40 PM
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See white splotches. Also see stems in the background new growth leaves curved downwards and small.

Spot dosed wood in the area (it didn't touch if it did they would melt badly), got the same thing from @Deanna Excel Bomb (1.5ml/Gallon).
No I haven't done 2 - 4X Excel dose whole tank for any extended period of time.


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