Well I have my tank up and running and the planting density is towards a medium to heavily planted tank. I didn't intend to go high tech but I ended up there in error. I bought the double Hagen Glo high output T5's and with two 24 watt tubes, I thought I would be running just slightly over 2 watts a gallon, where I wanted to be. But after purchasing them, I realized because of the "high output" nature of the tubes, though they are rated at 48 watts total, in reality its more like 68 watts total.
So my 20 gallon gets Seachem Excel everyday, along with trace elements added, comprehensive, Iron, and potassium based on the schedule promulgated by Seachem, which they call "lean."
I recently added 8 Glow Light Tetras and then added another 6 today. I jump started my tank cycling with stability and combined with lots of plants, I haven't really shown much ammonia, no nitrites, and my nitrates have been at "5." The bio load on the tank isn't stretched beyound its means. Here's a link to the stocking calculator I have with the filters I'm running listed: http://aqadvisor.com/AqAdvisor.php?A...chMode=simple&
I'm not going to add any more fish that my 14 Glow Lights; I might include about three to four shrimp, then I'll declare that tank done.
So I'm a Characin guy now, with a single specie tank of Glow Lights.
PS: They love Blood worms (frozen).