Mr Saltwater Tank's pocket guides

[dmolavi]

Has anyone here bought the Mr Saltwater Tank pocket guides, and if so, what do you think? Do they just have the common sense stuff, or info that's already available here or on the internet? They seem kinda pricey for "pocket guides"...

 

[Stlrockguy]

I got 2 apps on my iPhone which helps and both were free. The aquarium handbook and the pocket reef

 

[dmolavi]

Those aren't provided by Mr Saltwater Tank. I'm asking specifically about the pocket guides that he provides for sale on his website.