I think you should get an solid wood stand if it makes you feel more comfortable, however, I have to say that I had a SeaClear 55 show tank on a particle board stand for 5 years w/ no issues, and I am sure Oceanic normally puts out a quality product, MDF is sterner stuff in all things but water, and if I am correct, that MDF stand is actually covered in a plasticized coating.

All that being said, there is nothing like a solid wood stand, i hated that plasticized black stand for my seaclear tank from the day I bought it, I was just to cheap to replace it.

Good luck, and let us know how it all turns out.