Well I am not going to turn this into a peeing contest just letting you know that my statement is not an opinion. An LFS employee was responsible for taking advantage of my ignorance which cost me 17 fish . Which is why I take advice from here and people that I know are competent. Did you measure the Par ? Just curious. I use a very low wattage light on my mushroom farm
. It only has 3 light spectrums. I am sure 50 Par is no big thing . If whatever You are doing works than who am I . As above though would like the answer to whether you measured . Its not easy to get accurate readings I have an apogee and did tot even think of the readings being effected by the screen on my lids in any great amount. I was wrong all my readings I took with no lid were lower by 15% with my mesh lids . I am now in the process of changing them all with more open plastic mesh that claims not to block the light . I am still making them and have not checked . Also surface disturbance gives you a huge spread. Tons of things that effect it. I did a map of my tank and would get a 20 % drop sometimes a few inches away from the last
