It's not just the aquarium you need patience with!

Researching this hobby on the internet is a nightmare. Everyone has a
different opinion about everything! Things I have learnt about
Lawnmower Blennys today, all from reputable web sites:

1) They will only eat fresh algae on LR, not other foods
2) They do not eat algae but may eat flake and frozen products
3) They will only eat macro-algae
4) They will only eat micro-algae
5) They will eat hair algae
6) They will eat all algae except hair algae which they wont touch
7) They are small fish suitable for 20G and up
8) They are large fish only suitable for 60G min
9) They are an easy-to-keep fish
10)They are hard to keep and usually starve unless you return them
11)They can be used instead of snails and hermits
12)Snails and hermits do not eat algae
13)They are peaceful
14)They attack other fish that look like them

and so it goes on. Reminds me of a similar time I spent researching
what water should be used to add salt to, opinions ranging from "only
RO/DI" to "salt has been formualted to compliment the contents of tap
water NOT RO/DI".