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Old 01-29-2017, 07:35 AM   #11
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Needs to be out of the water though
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Old 01-29-2017, 07:38 AM   #12
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Ya the whole set up, that might show if theres a leak, i marked the bottle every night and no change.
It may just be surface diffusion issues as well. Since adding the Subwassertang (a sandwich bag full) ive noticed a film on the water surface.

Its kind of a holding tank for stuff till i get around to the projects at hand
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Old 01-29-2017, 12:48 PM   #13
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I must be missing something. Your pH is 6.5. That is well below the green you're looking for with the drop checker.
The solutions I've seen always change at 7.2.
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Old 01-31-2017, 10:18 AM   #14
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I must be missing something. Your pH is 6.5. That is well below the green you're looking for with the drop checker.
The solutions I've seen always change at 7.2.
My tank ph is 6.5 pre Co2 use
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Old 01-31-2017, 10:21 AM   #15
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So i took out the Subwassertang and ran a skimmer for a while.

Everything is good now and theres no more film on the surface.
The excess is exchanging per normal now.
Unfortunately all that Co2 was gassing a Scud population into submission...not any more.

What eats em?
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Old 01-31-2017, 12:20 PM   #16
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My tank ph is 6.5 pre Co2 use
Compare the pH in the morning then. Even if the drop checker is yellow, I can guarantee it's back to baseline pH by morning, meaning the problem is with the drop checker. Co2 gasses off very easily and quickly, so there's really no chance it's staying in the water overnight after being turned off.

You mentioned surface film, but a surface film will not stop gas exchange over such a large surface area. Co2 will off-gas fairly quickly regardless. The issue is likely that the same surface film is building up inside the drop checker, which comparatively has a very small amount of water surface area inside.

EDIT: Wait, what are you putting in your drop checker? Are you using 4dkh solution and ph drops, or just tank water with ph drops?
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Old 01-31-2017, 01:51 PM   #17
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Compare the pH in the morning then. Even if the drop checker is yellow, I can guarantee it's back to baseline pH by morning, meaning the problem is with the drop checker. Co2 gasses off very easily and quickly, so there's really no chance it's staying in the water overnight after being turned off.

You mentioned surface film, but a surface film will not stop gas exchange over such a large surface area. Co2 will off-gas fairly quickly regardless. The issue is likely that the same surface film is building up inside the drop checker, which comparatively has a very small amount of water surface area inside.

EDIT: Wait, what are you putting in your drop checker? Are you using 4dkh solution and ph drops, or just tank water with ph drops?
The 4dkh soulution

The drop checker qas a dark green this morning vs waking up to it being yellow
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Old 01-31-2017, 01:56 PM   #18
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Heres the tank last nite after i took out the Subwassertang and hat some serious gigawatts goin to use up Co2
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