Does flourish excel drop the ph - The Planted Tank Forum
 
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post #1 of 2 (permalink) Old 11-26-2015, 03:42 PM Thread Starter
Algae Grower
 
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Does flourish excel drop the ph

I have a 55 gallon tank moderately planted, with rainbow fish. I just started the tank about 4 weeks ago. I noticed that I had a bloom of brown algae and I started dosing excel two weeks ago. My PH before dosing the Excel was 7.6 to 7.8. I dosed one Full daily for one week. I then did a 50% water change in added for capfuls. And then 1 to 2 capfuls thereafter for the past 2 to 3 days. Today I noticed that the fish were hovering at the bottom and we're not as active as they usually are. I tested the water parameters. Everything was normal meaning that the ammo was zero, nitrites were zero, and nitrates would between 10 and 20. I checked the pH and it was six!. I added several teaspoons of baking soda to my sump and the pH came up to 7.6 to 7.8. The fish are starting to swim around a bit more at this point.

I don't understand why the pH droped so much and I'm wondering if it was the Excel. Can anybody advise me on this point?
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post #2 of 2 (permalink) Old 11-26-2015, 05:54 PM
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I've been dosing excel for the past 45 days and I haven't had my pH change at all. But I started out by under dosing for about 3 weeks because I didn't want some of my sensitive plants to melt. I'm now at the suggested dose, but I do it every other day. And I've never done the big dose that they say to do after a big water change.

I remember one time I accidentally overdosed by about 2ml and almost instantly saw my fish gasping at the surface. So I immediately did a large water change and all was good afterward.

How heavily planted is your tank? And how strong is the light? Maybe it's possible for the excel to cause a pH drop if it doesn't get used up quickly enough. But according to Seachem it doesn't cause pH fluctuations.

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