Hoppy...I just recently set up a planted 36 gallon bowfront tank. I am running a 36" dual lamp T5ho Aquatic Life fixture on it. I'm running the 36" because the 30" only uses 24" bulbs. I have it sitting on top of the tank with the included legs. Is this enough lighting for my tank? I am also running pressurized CO2. I am just wanting to make sure this is enough light to reach all areas of the tank as I have dwarf pennywort that I am wanting to carpet the tank with. Thanks in advance for your advice!
Blindriver, I am making PAR meters differently now. See http://www.plantedtank.net/forums/sh...d.php?t=615762 The best filter combination I have found for this purpose is Roscolux #4307, #3410, and #38. I haven't yet shipped one to Canada because of the very high postage rate, and the paperwork required, but I may do so in the future. Right now I have stopped making them while my wife and I sell our house and find another place to live, then move there. I suspect that will take up to 3 months. I do plan to resume making them after that.
I have not been able to design a PAR meter that I can make and have it read correctly without lots of adjusting. There are just too many variables involved. All of those I have made I adjusted to match the readings of a Apogee Quantum par meter.
I would like to say what a great write up you did on how to build a par meter. I have a 250 gallon salt water tank with live coral and have been trying for awhile to find out exactly what the light out put from my bulbs is. and compare I run three 250 watt 14000K double ended Phoenix metal halogen bulbs for lighting. I have read your article and obtained the VTB8441BH diode that you talked about. I have also got the Cinegel samples that you mentioned. Towards the end of your post it appears that you choose only to use the 4815 Rosco filter. Is this correct? I am going to attempt to build one of your devices following the directions you supplied. Also do you know what number diffusers you used is this a trial and error thing? (As per the question below if required could I purchase a Par meter from you and if so how much would it cost? I also live in Canada.
I haven't shipped any PAR meters to Canada, but I suppose I could figure out how to handle that. It does require that I visit the Post Office each time I do that, and pay whatever they decide to charge me, plus filling out lots of paperwork.
I'm not making any PAR meters now, instead I am trying a new technique for making the sensors, see http://www.plantedtank.net/forums/sh...=453225&page=3 If that works out I will probably resume making them. You can use a Lux meter, as long as you keep it out of the water. Just divide the lux by 78 to get a fairly good estimate of PAR.