Watts per gallon

I have 65 watts of light on a 29 gallon. That's about 2.25 wpg. Are there any plants that I should avoid with this level of lighting?


Pressurized or DIY CO2?

At that level of lighting you can grow about anything, since a 20gal High depth is 16" at most. Pressurized will make your life easy but DIY can be used with good results.
 
you're probably going to want to figure out some type of CO2 system. I was at about 2.5 wpg and was trying to just use excel, but I developed some pretty bad algae issues.
 
29 gallons are ~18" tall Riiz.

You're in a pretty good area. It's hard to recommend against something as every setup is different.

Oops, thought I read 20gal. I consider 18" the border of shallow to tall tanks.
 
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