co2 diffusion question - The Planted Tank Forum
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post #1 of 8 (permalink) Old 11-16-2015, 12:15 PM Thread Starter
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co2 diffusion question

Hi all

So previously i was using a 400L/hr canister filter attached to a Ista co2 reactor. Even though the flow rate was slow, i was getting 100% diffusion and i've noticed my plants were pearling pretty nicely

Lately, i have changed my canister filter to a 1200L/hr canister filter along with the insta co2 reactor, however i''ve noticed no pearling ever since i installed this canister filter.

I have ordered a drop checker and have one on the way

My question is, just because i dont see any pearling, does that mean my tank is "growing"?

I know pearling doesn't necessarily mean that a tank is healthy or growing but i'm using high light and EI dosing but i dont know why its not pearling

thanks
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post #2 of 8 (permalink) Old 11-16-2015, 12:44 PM
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Most people feel that pearling is a sign of good growth. Other people, frustrated at their inability to cause pearling, vehemently disagree. Still others think that pearling is a myth perpetrated by the Illuminati. And the rest of us gave up on it long ago and watch for happy plants with good color that gradually grow upward and outward.

You call

P.S. Just make sure to stick the drop checker somewhere away from the canister outlet to avoid possible false indication, and make sure there's good current everywhere. Also order some 4dKH solution and never use tank water in the checker. Any standard pH indicator solution is fine as a reagent.
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post #3 of 8 (permalink) Old 11-16-2015, 12:48 PM
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i got plenty of pearling, and yet i still have algae. specifically: GDA on anubias, and Rhizocolonium at everythingelse...
i think the best yard stick for success is having an algae free tank.

@kevmo911 why can't I use tank water in the checker?
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post #4 of 8 (permalink) Old 11-16-2015, 12:52 PM
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In short, tank water probably isn't going to have a KH of 4. Since we know that 4dKH water turns solid green at around 30 ppm CO2 concentration (which is a nice starting point), we like 4dKH.
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post #5 of 8 (permalink) Old 11-16-2015, 01:40 PM Thread Starter
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i tried to do my own 4dKH but my drop checker is orange lol
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post #6 of 8 (permalink) Old 11-16-2015, 06:20 PM
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I want to see what this is

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post #7 of 8 (permalink) Old 11-17-2015, 02:46 AM
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Quote:
Originally Posted by Charlie25 View Post
i tried to do my own 4dKH but my drop checker is orange lol
Are you using bromothymol blue as the indicator?

Anthony


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post #8 of 8 (permalink) Old 11-18-2015, 12:50 AM
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I have pearling and algae also- I hate algae- I am starting to think that people who say they "never" or they "don't have algae are big liars....

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