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Old 04-10-2007, 04:28 PM   #11
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You would lose some CO2 without the glass canopy, I don't think it would be a huge concern for people with pressurized systems, but then, I've never ran CO2 on my planted tanks. It would make for an interesting experiment though.

On the other side, I know that switching to open top on my marine aquarium, while lowering CO2 levels somewhat, did NOT lower them enough to appreciably affect the ph. I hate to say it, I've paid more attention to the reef tank than the planted tank, I guess I'm a lucky person in that my planted tanks always seemed to be pretty self sufficient with regular water changes, even though I'm using apparently outdated methods. More than one way to skin a banana.
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Old 04-11-2007, 12:46 PM   #12
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Trapping CO2 in with a glass top could mean less oxygen available for "surface diffusion" into the water.

IMO, unless you have jumpers, go topless.
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Old 04-11-2007, 12:57 PM   #13
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I've always wondered this too! Good thread. 3/4 of my planted tanks are open top, which I prefer. I have to use glass tops on my 55g, as I've got jumpers. I've always wondered just how much light is blocked by the glass. *cough* I don't clean it often *cough* So that might be one of my problems...
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Old 04-12-2007, 02:13 PM   #14
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if no glass top how about all those little jumping water mist from air bubbles etc doesnt that hit the light and mess it up?

also how about the dust and everything that falls inside the tank, here in los angeles for some reason is a hell of a dusty place, after one week of having no top the surface is so thick u cant see beyond it clearly the tank is in my garage. plus I have a cat which sheds hair like crazy how you deal with those floating hairs from not gettting inside the tank?
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