Lighting plus CO2 timing question - The Planted Tank Forum
 
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post #1 of 9 (permalink) Old 03-10-2009, 04:08 AM Thread Starter
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Lighting plus CO2 timing question

I have my tanks set to light from 8-2pm then from 4 to 9pm. However my CO2 is timed that way also. I'm wondering if I'm not adding enough CO2 during the time it's off. My 20g has developed GDA and Diatoms I believe. It's only a week old.
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post #2 of 9 (permalink) Old 03-10-2009, 04:09 AM
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GDA and diatoms are normal during the start of a new tank.
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post #3 of 9 (permalink) Old 03-10-2009, 04:48 AM Thread Starter
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So is my lighting time good?
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post #4 of 9 (permalink) Old 03-10-2009, 04:53 AM
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Why do you have a "siesta" period? I haven't seen much credible evidence that it does much to curb algae growth. My recommendation would be to run your lights ~6-8 hours daily. On the lower end if you have less plant mass or high light.

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post #5 of 9 (permalink) Old 03-10-2009, 04:54 AM
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diatoms are normal in new tanks....my 110g had them for a few months before they went away.

but i also think 12hours is too much lighting. They say 8-12 hours a day is okay but... i tend to like the lower end. My tank's only on 8 hours but you could cut yours down to 10 and see if that helps.
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post #6 of 9 (permalink) Old 03-10-2009, 05:18 AM Thread Starter
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I'll try cutting down on my light time. Thanks!
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post #7 of 9 (permalink) Old 03-10-2009, 07:51 PM Thread Starter
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Instead of starting a new topic, I have other questions that maybe someone can answer. My tank is low planted which is probably the reason for the GDA and diatoms and I've ordered some more plants which should be here tomorrow and I'm wondering if I should clean the algae and do a large water change before planting? Also I have 4 whiteclouds in an established baby biorb (about 2 months old) and I'm wondering if it's okay to transfer them in my new tanks to kinda speed up the cycle before adding the fish I really want in them. Here's my 20g with a little algae on the glass.

it's worse now. There sand looks green now and the rocks have brown spots and hair like algae on them now.
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post #8 of 9 (permalink) Old 03-10-2009, 08:10 PM
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Like I said, GDA and diatoms are normal in a new tank. The diatoms will go away eventually. Otos and amanos may help.

Let the GDA/GSA life cycle take it's course over ~3 weeks or so then scrape it off and do a WC. There's many topics regarding both diatoms and GDA/GSA in the Algae forum. Start there.
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post #9 of 9 (permalink) Old 03-10-2009, 11:40 PM
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Relating to your CO2 dosing...do you have any idea what your concentration is...ppm. Do you use a drop checker? In addition to the comments about cutting your lights back, you may not be suppling enough CO2.

Victor PIMP #20 - SR253B-320
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