Homebrew PCBs

So far, my cheapo homemade bubbler tank is working pretty good. 
Don't know the total cost of everything but this is what it is...

A tupperware container I got from Walmart - about $2.00, Holds about 
an 8" square board.

An aquaium pump, hose, and a bubbler stone (?) - about $7.00 at 
Meijer (something like a walmart).

What I like - it's cheap.

What I don't like, the bubbler stones.  I can't seem to get them to 
stay on the bottom where I want them.  I am going to, when I have 
time, empty the tank of Ferric Chloride, and silicone the stones to 
the bottom of the tank and see if that holds them where I want them.

I don't use a heater as I am 96.37% sure someone told me not too, so 
I don't.  I have not etched a lot of boards, about 15 or so, so 
please take my comments for what they are worth :-)

Chris