does this have enough support for the weight?

[hmt321]

that was the 1st stand i ever built, it was a little overboard

 

[J double R]

looks great.
make sure you have the load on the ends of the stand, not the center.

your center bracing shouldn't support the tank.

this is an exaggerated drawing of what I mean.

edit:
the top is a bad stand

the bottom is correct stand

but wouldnt the gap in the middle be bad for the tank? my wrought iron stand is bowed like that in the middle and i'm not using it cuz i'm scared ****less that my 75 is going to break from it being like that.

 

[J double R]

bowed down in the middle, like the 'good' stand, i mean.