NoNitrates
Aquarium Advice Regular
So a 29 has 45% more water than a 20L. But 0% more surface area. So can you stock a 29 with 45% more fish or is it closer to 0%?
I don't know if I trust the Aqua Advisor site. According to it, in a 20 long with AC 50 filter, you can have 25 Cardinal tetras, OR 25 Bleeding Hearts, OR 60 Glowlight Tetras to put the stocking level to about 100%. That just seems like too many. And I changed the height dimension from 12 to 18 inches, which is about the size of a 29, and exact same stocking level %.
I got a 29g and wish a thousand times I bought a 40B. I didn't think the 36" length of the 40 would fit in the space I had. Turns out I did. So many more advantages to the 40B over the 29g especially for plants and aquascaping. For the six more inched in length, it is well worth it. OS.