co2 levels confuse - The Planted Tank Forum
 
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post #1 of 6 (permalink) Old 12-28-2013, 07:36 PM Thread Starter
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co2 levels confuse

So I think i have a pretty high tech system.

I have pressurized co2 with regulator, bubble counter, diffuser, drop checker.

I have an apex system with ph probe that monitors my ph level.

I went from this morning at 9 am of 6.25 ph level. Now I'm at 5.88 ph level.
The drop checker is still blue. There's nothing going on with my fish so I think I'm undosing.

Bubble counter is probably 5 bps. Its coming out from a co2 ceramic diffuser and powerhead pushes it into return pump which travels about 5 ft to spraybar.
I don't see any co2 bubble escaping at all. 99% of it gets dissolve before it makes it to return pump.

Any ideas?


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post #2 of 6 (permalink) Old 12-28-2013, 08:02 PM
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How are you measuring the pH? Are you making sure there's no stray current? Turn off the electrical devices and then measure the pH, if there's a difference, then there's an issue.

Even if you have a KH of 1 degree, it's going to be about that pH ranges you mention.

Drop checkers stink frankly, stick with the pH/KH/CO2 table, use that to adjust the CO2 relatively.

SLOW Progressive adjustments......... and watch and observe the fish, algae, plants.
Once you get to where things look great, stop, that's your target.
Do this slow and watch after you adjust.




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post #3 of 6 (permalink) Old 12-28-2013, 08:05 PM
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Quote:
Originally Posted by plantbrain View Post
How are you measuring the pH? Are you making sure there's no stray current? Turn off the electrical devices and then measure the pH, if there's a difference, then there's an issue.

Even if you have a KH of 1 degree, it's going to be about that pH ranges you mention.

Drop checkers stink frankly, stick with the pH/KH/CO2 table, use that to adjust the CO2 relatively.

SLOW Progressive adjustments......... and watch and observe the fish, algae, plants.
Once you get to where things look great, stop, that's your target.
Do this slow and watch after you adjust.
Most recommend drop checker against ph/KH/co2 table. What's wrong with drop checker?
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post #4 of 6 (permalink) Old 12-28-2013, 08:53 PM Thread Starter
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Quote:
Originally Posted by plantbrain View Post
How are you measuring the pH? Are you making sure there's no stray current? Turn off the electrical devices and then measure the pH, if there's a difference, then there's an issue.

Even if you have a KH of 1 degree, it's going to be about that pH ranges you mention.

Drop checkers stink frankly, stick with the pH/KH/CO2 table, use that to adjust the CO2 relatively.

SLOW Progressive adjustments......... and watch and observe the fish, algae, plants.
Once you get to where things look great, stop, that's your target.
Do this slow and watch after you adjust.
hey tom,

i did measure ph with testing kit and it shows ph of 6.0, could be less because the yellow color on the tube is lighter than the 6.0 on the test kit.
the ph on the ph probe still shows 5.8. Does that sound about right? stray currents affect ph levels?

What about co2 dissolve? The co2 is being diffuse into sump. I see all of it diffuse properly and suck into return pump. The water level is at half of the sump, if co2 is already dissolve, would it disappear if it hit water surface?


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post #5 of 6 (permalink) Old 12-28-2013, 09:07 PM
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Since you mention the sump, do you have a tickle filter which can degas co2 fast?

Also, i read somwhere before, if your spraybar is under water vs above water surface, it will make a huge difference in degas rate too

Joe [
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post #6 of 6 (permalink) Old 12-28-2013, 09:23 PM Thread Starter
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Since you mention the sump, do you have a tickle filter which can degas co2 fast?

Also, i read somwhere before, if your spraybar is under water vs above water surface, it will make a huge difference in degas rate too
spraybar is under water....


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