I'm not sure if it's the same thread I was reading but it could be. In any event, I don't have much choice. Having LEDs within a couple of inches of the water surface pretty much requires a splash guard. I did that once without and the splashing/humidity caused an LED to unglue and fall in on a shrimp only tank. Total loss. Not really up for repeating that one.
Winters here are pretty dry so having an open top tank isn't that big of a deal and I haven't had to deal with wiping down windows or ice on them so I can stick with the eggcrate covers I have. They're heavy enough to keep the Cories and Discus in despite their best efforts. Besides, if I close them in I'll lose the flowering aromatica.
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Winters here are pretty dry so having an open top tank isn't that big of a deal and I haven't had to deal with wiping down windows or ice on them so I can stick with the eggcrate covers I have. They're heavy enough to keep the Cories and Discus in despite their best efforts. Besides, if I close them in I'll lose the flowering aromatica.
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SuperColey1;69875 said:That thread I linked to shows pictures of him taking the measurements. Even just below the water surface PAR is almost halved under the glass lid! However that is with his flouro not LED. Maybe LED is different
Taken from this thread:
http://www.omnima.co.uk/forums/index.php?showtopic=6
At the substrate (50cm tank) the readings were 102 with and 70 without.
Quite a difference and even with LEDs penetrative power and lower spill I would suspect a similar fate. Just using less power to get the initial 278 but still getting the circa half measure with the glass.
AC