Fwiw. Everything penetrates to the bottom of the tank. It’s sales talk.
If. Nothing thing penetrated , it would be dark. You’ll always have more light up top and less below.
What you want to look at is how much it gives you on the bottom, and how much you want. 50-80 par is fine for shrooms a lot of lps , etc , some like 100(pretty standard) , then figure out how much is on top.
T5 falls off most evenly , led pucks have hot spots. To make this more even , you can look at more pick units , multiple a360 or Radion heads , or panel style muliti emitter, like reefbreeders photons or Orphek. On the cheap end of that is B.B. and units like the t247.
If. Nothing thing penetrated , it would be dark. You’ll always have more light up top and less below.
What you want to look at is how much it gives you on the bottom, and how much you want. 50-80 par is fine for shrooms a lot of lps , etc , some like 100(pretty standard) , then figure out how much is on top.
T5 falls off most evenly , led pucks have hot spots. To make this more even , you can look at more pick units , multiple a360 or Radion heads , or panel style muliti emitter, like reefbreeders photons or Orphek. On the cheap end of that is B.B. and units like the t247.