The references I've seen state that acrylic should be fine with 5% vinegar. I might look for something more resistant if I were using a stronger form of acetic acid.
The container it comes in plastic..... Acrylic I can understand it being corrosive to because of the acetone, but it comes in a plastic bottle.
It's also a bad idea to put it in a clear container and it does all sorts of weird stuff(cloudy, separates, gets chunky, don's ask me I just know what happened to me). Trust me I know what it does in a clear container, it's the only reason I ever started emailing red sea about the product.I agree, and some use the original bottle. I prefer having a devoted container under my doser, and keep refilling it. I looked for plastic containers amf found some great ones, but in doubt if that plastic would or not react, ended getting glass to be sure. In case this corrodes a plastic container and goes into the tank, its all bad news and this : :headwally:...
I wouldn't dilute it.