I would be very leary of something like this. you only need a constant addition of minirals if you've measured a contant decline in those same minerals in your reef. That rate is different for every tank and so I would find it hard to believe something like this could be used without elevating the levels of those minerals TOO high. But thats just a first thought. I've never seen these and this is the first i've heard about them so I could be wrong. Do you have a link for the manufacturer of them or any additional information?
In regards to your individual tank, sirfishmaster, general rule for any additive, is don't add anything you don't test for. And don't presume you need anything without proving you need it by testing. To much of some minerals/elements is worse than not having enough as many become toxic at too high of a concentration. If you currently have no corals then you likely don't need to add anything that isn't replaced by a normal water change. But again, the only way to confirm that assumption is by testing.
I'm really interested in some more info on those trace blocks.