2x Hagen Ladder? Overkill - Page 2 - Equipment - Aquatic Plant Central

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Old 06-28-2006, 09:19 PM   #11 (permalink)
 
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Change one bottle quickly (within 15 mintues). While you change the bottle use a clothes pin, or black metal binder clip to pinch the open line to keep the CO2 from escaping completely from the bottle that is still on.

-John N.
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Old 06-29-2006, 07:52 AM   #12 (permalink)
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If you could hide them well, behind plants and such- you might actually get better CO2 distribution in your tank if you used two ladders, one on each end. I say this because the one problem I found with the ladder was that only the plants in the area immediate the ladder seemed to be benefitting, and the plants on the end opposite the ladder seemed to not do so well. With two ladders, you would probably have better diffusion throughout the tank. And, as a newbie to the process, it would be easier to see which bottle needed changing, as you could tell by the bubble output which mixture was almost run through it's course.

PS before you hook this up, make sure you check your Karbonate Hardness (KH) to see that the water is well-buffered. If it's not, you could have a rapid drop in your ph that will kill all your fish. This happened to me the first time I tried this, I set up the CO2 system on an unbuffered tank and my ph fell through the floor, killed three of my fish and most of my shrimp. Now that I know this is a problem I add a little Seachem Alkaline Buffer to the tank about once a month to keep things stable... it's no big deal really, just as long as you keep it in mind... chances are, you might not even have to worry depending on the water in your area, but you should check it in the beginning just to avoid any disasters.

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Old 06-29-2006, 08:08 AM   #13 (permalink)
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You can also stagger your start-ups, so that the second bottle starts one week after the first bottle started. Subsequently from thereon out, you'd be changing the older bottle every 2 weeks.
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Old 06-29-2006, 10:38 AM   #14 (permalink)
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Quote:
Originally Posted by Bert H
You can also stagger your start-ups, so that the second bottle starts one week after the first bottle started. Subsequently from thereon out, you'd be changing the older bottle every 2 weeks.
That's how I do it with my two bottles changing them out on alternate weeks. Although when I start off I set up both bottles, except in one of them I use half the amount of sugar as I would normally use. That way, to begin with I have the output of two bottles but one runs out faster than the other so I have to change it sooner, thus starting the staggered changing process.
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Old 06-29-2006, 10:46 AM   #15 (permalink)
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For the amount of space involved in two ladders and the price of both, why not consider a Barr-style active reactor? It would take up the same amount of space in the tank and would be MUCH more effective than the simple ladders. You might give it some thought. Good luck.
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Old 06-29-2006, 12:00 PM   #16 (permalink)
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i already have the ladder so thats the only option i have, so you mean 2 ladder i think thats too much co2, correct me if im wrong the normal co2 level should range 30ppm only, and i only have 2.9wpg NO+CF
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Old 06-29-2006, 12:44 PM   #17 (permalink)
 
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You should target in excess of 30ppm CO2 for at least two reasons:

1) It's easier to grow without algae. It makes dosing easier. It makes everything easier.

2) DIY CO2 output fluctuates by its nature. If you agree pH changes from CO2 won't affect fish (only KH changes), your goal should be to overshoot CO2 production so the minimum CO2 output is above that 30ppm target. Fluctuation at 30-40ppm matters less than 20-30ppm CO2.
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Old 06-29-2006, 01:04 PM   #18 (permalink)
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Yeah, shooting for 30ppm CO2 at all times is just about impossible with DIY... and also, I don't think the Hagen Ladders (while a nice easy route to go that does get favorable results), are the most effective CO2 method of diffusion... so you might as well overcompensate, there is nothing bad about this unless you keep an eye on the KH/PH levels and pay attention to the fish... if they are ever gasping at the surface of the tank in the mornings before the lights go on, you should probably start running an airstone at night, or unhook the CO2 while the lights are off.
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Old 06-29-2006, 02:05 PM   #19 (permalink)
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i think 1x 2liter bottle is good for me right now, and sooner or later maybe ill go with the 2 bottle if i already have a lots of experiance about the relationship of co2 and Water chemistry. Ill go for the safe side first
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