OK, things are getting out of control.
I saw a 29 gallon on sale at one of the other Petcos in my area. It was on sale for $89!!!!!!! I traded my 20- gal setup (which was on sale for $65) for the larger tank- it is a kit, adjustable heater and everything. (I won't have space or time to do much about setting up a tank until after Xmas). Then I read a link about "The Walstad Method". Is there a thread about this? I may start one. My local garden center (NOT a big box) actually sells aquatic soil. You're supposed put it in a pot, plant the aquatic plant in the pot, then sink it in your pond. Am I onto something?