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turtlehead said:
my riccia is not pearling like most of the pictures I've seen of it is it because I don't add co2? 3.8wpg 10g and is that too much lighting? I've been using excel and ferts
Yes, C02 is needed for pearling to happen.

No, that is not to much light; however you do need to add C02. Excel is only a carbon source and will not have the same benifits as injected C02.
 

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They will grow, but the addition of C02 will make a big big differance. With 3.8WPG C02 is needed or you will most than likely run into algae problems down the road.

The yellowing ricca could be a nutrient deficiancy or lack of C02. Do you have it floating or attached to something?
 

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With a 10G, 3.8 wpg may not be quite enough light for Riccia, especially without CO2. I have no experience with Riccia in anything smaller than a 125G but have read that, with smaller tanks, light levels of >5 wpg may be necessary. Please correct me if I'm wrong here :oops:
 

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FWIW, I am growing riccia (travis, thanks for the starter) in my 10g with 6wpg, 2x15w 5500k and 2x15w 9325k with diy co2 > 35ppm. I too think that 3.8wpg in a 10g may not be enough.
 

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Love to see some pics of that Riccia if you get a chance baj :) Mine is growing very 'straight up' rather than sideways and I would love to know if you've had a different experience.
 

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I'm with Shane. It will do fine with 3.8 WPG. I grew riccia very well in a 10G with 3.9 WPG. I think CO2 is a must though. DIY CO2 is a viable option with a small tank.
 
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