What is this thing about "at most 1/4 inch of gravel"??

That's an AquariumFish.net thing. They make that recommendation for all tanks,
not just those holding SAEs. The idea being that deeper gravel is harder to
keep clean, and more likely to go sour. It's probably a good recommendation
for a beginner, with the typical beginner's non-planted tank.

Obviously, it doesn't apply for planted tanks.



Leigh

http://www.fortunecity.com/lavender/halloween/881/