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I recently added Co2 to my 46 gallon tank ;-)
I have only minimal Co2 via the Hagen system that is supposely for tanks up to 20 gallons.

I did notice after a few weeks of using the system, my Wisteria are pearling abit. What I'm surprised about is the Wisteria that I see pearling is about a 5 inch top section I cut off a bigger plant about 2 weeks ago. The tank also his Hygrophila (both green and Pink/Green variety) I guess I expected some of the full size plants to pearl not the cut-off top of my wistera. I'm kinda new to this, but am I missing something.

The tank is 46 gallons, co2 Hagen, eco-complete, cf 96watt 6700k.
 

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If bubbles are coming from the cut part of the plant this is called "false pearling", which happens when damage is done to a plant from cutting, a tear etc..

With a Hagan system on your 46G tank you are not going to see much real pearling. It would be better to hook up two 2-liter pop bottles to the ladder, this way you will get a lot more saturation of C02.
 
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