There was a time when two of my uncles used to make their own fish tanks. One of them had a home made 150+ gallon tank with large fish.
As for me, I don't have the patient, skills, or time to make my own fish equipments. 
Besides, if there is a problem, I can't call myself for refund, replacement.
I buy good brands with good reputations only, and I buy from good stores with high rating only.
Now with so many online stores, I do shop around as well for the best deals on the same goods.
| 
