2 Cube Hog UAS

[Devs]

I think I have the angle of the reflector sides just about right and the distance and angle from the leds is also about right, although I do agree it may need a little alteration here and there, the reflector is easily removed and changed, in fact all of the important components are easily and quickly removed. The reflector is 30mm away from the screen with the screen being a further 30mm away from the glass, which I would have thought is plenty of room for growth and reflected light ? I could also easily add an led or 2 either side to, as you say...get more light around the back of the screen.

[Devs]

Also don't forget...

Due to the up flow action of a UAS, with a good flow of bubbles the algae is kept suspended allowing for greatly increased light penetration, as opposed to the waterfall type which as you say...forms a thick mat giving very little light penetration.

There is also a prismatic diffuser in front of the leds, so the light dispersal is not going to be the concentrated cone that we associate with leds, it's going to be more of an even spread on and around the screen.

[Floyd R Turbo]

Try this: take a black piece of plastic or paper and clip it to the LED side of the screen. Then take a white piece of paper and clip to the back side. Put it together and see how much light actually gets reflected to the other side. This would represent the screen with the holes filled in with algae, and show you how much light gets reflected to the back side of the screen in this case, and you will be able to see that very well.

[Devs]

Hey Floyd

Tried your little test...

Whilst what I have does indeed bathe the whole back of the screen in light, I did slide the light unit to one side so that one vertical row of leds were in line with the gap and shining directly onto the angled part of the reflector. Obviously this did put more light onto the back surface, certainly enough for me to now be considering adding another two reds and one RB to cover that area, I just didn't want to start adding stuff that may or may not need adding, but more light onto the rear of the screen is surely going to be a good thing, so I'm going to run with it