So I am tired of not knowing ppfd in my tanks. I want to know exactly what my lights are putting out and where in the tank. This is not purely for my own one time edification. I plan on a bigger aquarium down the line with DIY lighting. I will definitely need a par meter at that point so I figured it might be good to get one now and actually get to enjoy it.
The Apogee SQ-420 also uses a computer and costs 234 dollars but only gives ppfd and nothing else. I have seen test videos online and they both seem very similar to each other. I think there is 1 or 2 other meters out there very similar in cost and performance to the Apogee sensor (possibly clones) but nothing else that I have seen offers better functionality at this price range.
You prob. really won't use any of the functionality of the sensor besides PPFD...
pH ammonia cards are too "expensive".YMMV
I have an issue w/ LUX measurements (but who really needs them)
The K measurements.. some people seem to get them spot on but I don't "believe" mine are.. though w/out a real spectrophotometer..????
Cosine correction is a good thing and Seneye lacks it.
and then there is the red "thing"..
Like Deanna I bought it on sale.
Actually the 420 was also heavily discounted at the time but still a good $100+ more than the Seneye
and in general use was just as accurate, oddly enough given it's inherent weaknesses.
I can't definitively say I regret the Seneye but if I went back in time I'd prob. get the new Apogee instead.
Bottom line is I take the Apogee more serious than the Seneye but to be fair I would be somewhat of an outlier in this.