Agreed, forget it. Diy really is inferior, that's why it's never been popular with serious hobbyists on this side of the pond, it's like wanting to buy a lada when you could get a porsche. I can not stress this enough, spend money on your equipment and your time on research and you will have a faultless tank. Skimping on either will just leave you with either the wrong equipment for the job or no knowledge on how to rectify the algae that you will no doubt result in.
What are your goals? You've said you already have a regulator in another thread, is this for another tank? Light filter etc? You're wasting time and money bothering with DIY.