Choclatebetta this is why those links aren't reputable:
Ask these questions about possible Internet and/or database sources:
Does the site author list qualifications? Is the author an authority? Government and university websites are reputable.
Does the author cite sources? Are those sources referenced?
Does the site or article sound credible? Is the tone authoritative?
Is the database article from a peer-reviewed source? This lends credibility.
Is the article timely? Was it written in the last 3-5 years? Earlier information may have been disproven or modified.
Is the information fair and objective?
Does the information validate or refute your understanding of the issue? Can the article be used as evidence in your document?
Does the author back-up his or her arguments?
Is the website active? Check URL links (Stapleton & Helms-Park, 2006).
Was the information retrieved from Wikipedia? This is not a reputable source. Look-up and study any reference material at the bottom of the Wiki page for possible use.
Those pages have't been updated for quite some time. As well as, being from sites that cannot be trusted, unless backed by a trusted site. ".com" is not reutable, so the list of 5 pages has 0 reputable sources
15 Gallon NPT
1g no tech bowl in the making