I'm not gonna pretend to be an expert about it but that's not true.
Anyways back to the OP. SCA tanks are great for the price and nothing to be scared of. If u want a comparison between cad and SCA, I have both and they are pretty much the same. I do like cad over flow better. Cad has a new stand that seems to be a big improvement over their old stands. I just can't get over their CS and lack of support keeps me from future purchases. At MAX SCA offered me tanks for stupid cheap before they show. Full package 65 rimless for $500. 50 gallon cube full package for $300. And I got my 40 rimless with stand for $200. They offered me something like a 150 gallon full package for $650. This is 1 hour before show ends so they dump them fast.