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post #1 of 7 (permalink) Old 08-31-2014, 07:53 PM Thread Starter
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Question Bba

Hey All.
I'm guessing that this is the beginning of BBA.I have what I would describe low to medium light.My photo period was 11 hours and I
have been providing co2.What has changed in the last week is the co2
has been turned off 5 hours before photo period ends(I'm turning it off manually before I leave for work)I was previously turning on co2 30min
before photo period began and turning off an hour before it ended.
Today I took 2 hours off of the timer,bring photo period from 11 hours down to 9. Should I reduce photo period more?Pics below.
Cheers
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post #2 of 7 (permalink) Old 08-31-2014, 09:27 PM
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I don't really see any BBA in there, unless I'm missing it. Diatoms, maybe.

You may get some better diagnoses posting in the algae forum.

Dvid


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post #3 of 7 (permalink) Old 08-31-2014, 10:27 PM
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bba

Definitely not bba. Its diatoms , and it will go away , in time , on its own. You need to turn your co2 on 2 hours before your lights come on and off 30 miuetes before they go off. Lights on for 8 hours per day. You can have a break in mid day if you want for an hour or two. That may help prevent algae. Bear with the diatoms , they will go away.

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post #4 of 7 (permalink) Old 08-31-2014, 10:44 PM
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I don't see bba. I see diatoms though. Possible Causes are: low lighting, long photo periods, excess silicates, excess nutrients, poor tank maintenance. 11 hour photo period is very long and is probably one of the causes, you may find even 9 hours is too long as well. All of my photo periods are between 6-8 hours but that being said every tank is different. If this is a new tank most likely the presents of excess silicates are the another major factor in the growth of diatoms. Once the silicates are used up the diatoms tend to go away, but if your water source has a high silicate levels you can always have a diatom problem.


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post #5 of 7 (permalink) Old 08-31-2014, 11:24 PM Thread Starter
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Great info as always,not to mention good news.I'll change my time from
9 to 8 hours.I'll be upgrading the co2 system and will have more control then.Thanks for the info folks,waiting the diatoms out is a matter of patience that nature will work out in her time.
Cheers
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post #6 of 7 (permalink) Old 09-01-2014, 12:26 AM
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CO2 doesn't control diatoms. As for when you start CO2 and when to turn off depends on the CO2 concentration, not arbitrary rules. Further, it's likely you aren't dosing fertilizers, hence the weakened state of the plants, hence the diatoms growing on them.
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post #7 of 7 (permalink) Old 09-01-2014, 01:10 AM Thread Starter
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Quote:
Originally Posted by Solcielo lawrencia View Post
CO2 doesn't control diatoms. As for when you start CO2 and when to turn off depends on the CO2 concentration, not arbitrary rules. Further, it's likely you aren't dosing fertilizers, hence the weakened state of the plants, hence the diatoms growing on them.
Thanks for the response.I put in fert tabs when I planted the tank 4 weeks ago.I do have some macro and micro ferts coming and will dose when they
arrive sometime this week.Will that help with the diatoms?
Cheers
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