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Re: O2 at night or not
Tom Barr wrote:
"So you think a rise of .5 to 1.0pH unit over several hours is going to make
a difference in the fish?
I don't think it is going to make a difference with the pH alone."
I don't know, but thought it should be avoided. The pH swing is from 7.2 to
7.6 over the week, before I change out one bottle. I can't go for more than
a week, with the heated bottles. I suppose they'd last long if they weren't
heated - or not? (I know squat about yeast biology).
> "But an idea you can consider is placing the DIY brew bottles on the
> ballast, they warm up during the day and increase production and then turn
> off at night lowering production".
I could certainly put the bottle heaters on the same timer as the light,
fairly easily. I can check that out with the fishless hi-light nursery tank.
Bottles on the light ballasts wouldn't work with my canopy designs. Ballasts
are adjacent to the lights. Also, I'm having to heat these bottles to 85 - 90
> "Your trying to hit a moving target. But most bottles do well for about 10
My individual bottles are lasting 14 days, heated; I change one a week.
> "Gas tanks are worth the expense and are extremely stable/easy and cheap if
> you have more than a couple of plant tanks. Sure save a good deal of
> headache and time."
I have 6 planted tanks, none of which could share a gas tank and I can't
afford 6 systems. House design precludes any two tanks being adjacent or
even on the same section of wall.
> " I learned that the hardness did not make a hill of beans difference,
> neither does turning the /cO2 off at night. You gain nothing for the fish
> either way."
I would assume that the types of plants which I can't grow worth a darn
failed due to excessive "liquid cement" in the tank. In all this discussion
I find I've lost track of why I would want to turn off the CO2 at night,
anyway? I don't think the logic of that ever got discussed. The idea of O2
at night was in a new aquarium plant book I ordered.
> "I do 50% weekly water change every week. I don't adjust the pH of the tap
> water, it comes in at 7.7 or higher. The tank's sit at 6.2-6.3 here.
> No fish issues. They seem to enjoy it."
OK, I do 50% water changes every week. Fortunately, my well water is coming
in at 7.4 - CO2 saturated, hence no shock to the system. But you're saying
there wouldn't be anyhow.
Thanks, I may be over fine tuning my systems. Sharon
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