What is a good par meter that works well with freshwater planted tanks? Most of the ones i find seem tuned for reef which I presume means they focus on blue spectrum....
"PAR" meters by definition don't focus on any spectrum except 400-
2 best choices:
Seneye or any Apogee w/the new sensor..
"Old" apogees are fine unless you run a lot of 660nm or less red but at that point the Seneye is equiv.
Are there specific model numbers ? How do you tell if the apogee has the new sensor ?
The Seneye Reef is a pretty cool piece of kit at significantly lower cost than a 'proper' PAR meter. I didn't have any luck using the slides to read pH and ammonia in my tank (apparently it doesn't work well at very low KH), but worth it for the PAR meter functionality alone.
Same here. My feeling is that the results are good enough for our purposes. I actually bought it for setting up my indoor hydroponics where I needed to balance light intensity, evenness of illumination, and also to balance the spectrum with a combination of "full spectrum" white LEDS and red & blue strips. It worked really well for this. Seneye tech support were sure the readings should be equally accurate in and out of water.I take the Seneye PUR values at their word (maybe mistakenly), since I have no way to calibrate.
---------------------------------THAT is new information.. thanks.
Yes, the red sensor LED blinks. I think that's how it reads the slides for pH and ammonia levels. But this doesn't affect the light readings. You can disable the alert LEDs (e.g out of water, high ammonia, different to the sensor LED) via the software.Only question I have is that the red led blinks when it's out of the water. and is in the sensor window area..
The Seneye is used by quite a number of us here on TPT, but 'group think' might be misleading us. Where did you see negative reviews? I'd like to look at them.
I'd be interested in some of the reef reviews ...if you're willing to take the time to supply them. It would be interesting to see how those reviewers calibrated the comparison products and the Seneye.Both reef and amazon have a ton of negative reviews; most are on things like the ph meter but a couple note that the par metering was way off when compared to other devices.
I'd be interested in some of the reef reviews ...if you're willing to take the time to supply them. It would be interesting to see how those reviewers calibrated the comparison products and the Seneye.
I don't pay much attention to Amazon reviews. They are generally written about a day after an item arrives, without gaining experience with the products and are not well considered.
another test:Apogee Instruments Inc.
3 years ago
We’ve investigated the issues raised with our PAR meters in this video and have posted an announcement on our website (see link below). We wanted to conduct our own testing using precision spectroradiometers, since the reference sensor used in the video was having software problems causing the other meters to look significantly worse than they are. In this process, we found that the Licor meter's software error explained some of the bad numbers in the video, but our testing also uncovered a small manufacturing defect in our 500 series sensors that has been causing low readings when measuring individual bulbs that are in the 400-420 nm range (such as deep-blue and violet "actinic" bulbs). This has been corrected in our sensors going forward, but if you already own an Apogee 500 series PAR meter and want to see if this issue significantly affects the measurements you are making, please see our site for more details. http://www.apogeeinstruments.com/apogee-instruments-500-quantum-series-product-announcement/
Right. You don't need precise values of PAR as ballpark figures are sufficient to determine if you can grow low, medium or high light plants.I have the seneye and it works well enough. Have used a couple others. Honestly, exact PAR values are irrelevant. It does not matter if your lighting produces 90 vs 100 par. A balanced tank will not care. The main concern is knowing the range. Are we talking 20ish par, 50ish, 100ish, 300...? As long as the meter used will get you close (IMO within 20%), it's all you need.
I have the seneye and it works well enough. Have used a couple others. Honestly, exact PAR values are irrelevant. It does not matter if your lighting produces 90 vs 100 par. A balanced tank will not care. The main concern is knowing the range. Are we talking 20ish par, 50ish, 100ish, 300...? As long as the meter used will get you close (IMO within 20%), it's all you need.