are you supporting the whole base of the tank or just the sides as so many
tanks seem to be.....

Most of my stands are steel framed and most when I bought them have the tank
just sitting in the frame with polystyrene sheet between.... I cut and fit
a piece of 12mm (1/2 inch) ply to the frame so the entire bottom is
supported...

This stops me being haunted by visions of dropping a small rock in the
middle of the tank and watching the whole bottom collapse.....

There are those in the groups who can fill in the whole hydro dynamics
thing - but basically for the weight of the rock to be too much, the bottom
would have to be unsupported... the main force of water being outwards on
the bottom seams at the base of the tank......

"Texas Yankee" wrote in message
...
I have a 105 gallon tank - there are lots of rocks in it - holy rock,
coral,
etc. - no gravel - the tank has developed a slow leak somewhere on one of
the bottom side seams - I'm removing the rocks and draining the tank - the
retailer has come out and looked at he tank (and the water on the floor)
and
confirms that the tank will be replaced by the manufacturer - but the
retailer has made comments about the amount of rocks in the tank - like
it's
too much weight - realistically, what kind of limits are there on how many
rocks (how much weigh) I can put in the tank? Any suggestions? Thanks!