I had a bad experience with them, refused my order, went with reef savvy, I have two more tanks on order with reef savvy, tanks are like art work from them.
DO NOT order from Marine Design Inc. Alex Parris straight up stole my money. I opened a lawsuit and he started slowly paying back my deposit but eventually quit responding or making payments. After 4+ months of battling him I just gave up and ordered one from MRC. roughly 10' x 3' x 5'. I would be more than happy to discuss my experiences so just pm me if you want more info on either company.
I was an idiot for doing the paypal as a friend so i had no recourse with my bank, or paypal (trust me, i tried). Lessons learned, never again not paying the 3% for coverage.
just wanted to update this in case anyone does a search on them.