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Old 11-08-2006, 11:43 AM   #11
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Quote:
Originally Posted by JDogg
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Originally Posted by drobertson
You say your PH is 6.8 after CO2.
My question is, How does CO2 effect the PH?
CO2 bonds with water atoms (H2O) to form Carbonic Acid (H2CO3) same stuff as in acid rain for the most part! i love Science! 8) at least i think that is probably what is happening
\

Yes/No... for the most part CO2 will not bond to water to form carbonic acid. Carbonic acid is one acid that is not stable and dissociates into water and CO2. This is in a constant equilibrium (the formation and dissociation of carbonic acid) in a water solution where CO2 is present. It may be the case that more than 99% of the CO2 molecules are not reacting with water molecules but it is that small portion of molecules that ARE reacting that causes the pH to be lowered by the formation of carbonic acid.
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Old 11-08-2006, 01:04 PM   #12
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Congrats, LWB! That plant looks great! Is it a Ludwigia brevipes?
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Old 11-09-2006, 01:26 AM   #13
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That's a really deep red! Nice.

And a little off-topic, what CF bulbs are you using?
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Old 11-09-2006, 01:37 AM   #14
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Quote:
Originally Posted by An t-iasg
Congrats, LWB! That plant looks great! Is it a Ludwigia brevipes?
It's a Ammania senegalinsis.

Quote:
Originally Posted by CaysE
That's a really deep red! Nice.

And a little off-topic, what CF bulbs are you using?
2 25W Screwin bulbs. 6700k
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Old 11-09-2006, 03:32 AM   #15
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Originally Posted by An t-iasg
Congrats, LWB! That plant looks great! Is it a Ludwigia brevipes?
It's a Ammania senegalinsis.
I've never seen that one "in person"! It's nice!
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Old 11-09-2006, 11:48 PM   #16
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2 25W Screwin bulbs. 6700k
What bulbs specifically? I can't find any screw-in CF bulbs above 10W that are white.
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Old 11-10-2006, 12:11 AM   #17
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Quote:
Originally Posted by Jchillin
For shame LWB, you knew you could have done this long ago. Nitrate deprivation causes the affect in most plants. The trick has always been how to balance it so it doesn't bottom out.

Congrats dude, nice job.
And no algae other than the Greenwater that keeps coming back, lol.......

Quote:
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Originally Posted by Lonewolfblue
2 25W Screwin bulbs. 6700k
What bulbs specifically? I can't find any screw-in CF bulbs above 10W that are white.
Here's the bulbs I have. They used to carry them at Walmart, but no longer do, so I've had to search for them online. These are the 20W bulbs. They also have 25W bulbs you can order too. You'll just need CO2 with them or you will get algae. I've been running my 20W bulbs almost 6 months, and not a spot of algae yet. Just do my proper dosing, and all's fine. But even with dosing the 25W bulb tank, algae comes on fast when I turn the CO2 off for any extended period.

2220-2VP - Lights of America 20 watt fluorescent bright bulb (2-pack)
http://www.esplighting.com/bulbs.html
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Old 11-10-2006, 02:20 AM   #18
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You are awesome! I was trying to find those bulbs at Loews and Home Depot tonight with no luck. Thanks!
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Old 11-10-2006, 02:42 AM   #19
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I can't remember what it says on the package, but the bulbs are either 6500k or 6700k. They work awsome.....
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Old 11-10-2006, 08:51 AM   #20
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Quote:
Originally Posted by Esra
Yeah i was going to ask.
How do you make a plant go red?
In addition to insufficient lighting and nitrate deficiency, I have found iron deficiency to also keep plants from getting as red as they should. This is especially true of Cryptocoryne wendtii "red" in my experience.
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