PAR Meter Question
As it turns out the search function still won't allow 3 letter word searches (CO2, Wet Dry, PAR, etc). Can someone inform me as to what exactly I'm looking for in a PAR meter for my aquarium(s), or better yet just give me a link to one that is inexpensive (I understand the term is relative) yet accurate? For what I'm wanting to do (low light, CO2, foreground only plants and maybe some Anubias or Crypts), I'd like actual numbers rather than guesstimates. Thanks in advance.
1. Watt [ wot ]: noun -- the SI unit of power, equivalent to one joule per second and equal to the power in a circuit in which a current of one ampere flows across a potential difference of one volt.
2. Per [ pur; unstressed per ]: preposition -- for each; for every.
3. Gallon [ gal-uhn ]: noun -- a common unit of capacity in English-speaking countries, equal to four quarts.
What does this have to do with growing plants?