Well I haven't lowered it yet. I'm still waiting to setup my other tank so I can move this aqua clear 20 that's taking up too much room. Once I move it and throw the Azoo Palm Filter on here, I'll have the space to lower it. I'm just going to clip it on a candle holder that sits lower than the tank. I attached a picture earlier in this thread before I planted and flooded the tank.
I also linked to that guy who carpeted HC with this light. I believe he said it was only 5" from light to sub. Seeing is believing right? Well he had 4 updates in a 3 month time span... sure enough the HC carpeted. Here's that link again, look up his videos and compare this one to "update 4." https://www.youtube.com/watch?v=R8Ci...e_gdata_player
Anyway, your cube's dimensions are larger. So i think the Finnex Fugeray-R or Fugeray would be a good choice.
Here's a little update on my Pico Cube... Not much to report, its a low light tank so things tend to inch along slowly. My Hydrocotyle tripartita sp. Japan is growing the fastest. I already snipped some off and replanted to fill in the sides of the stones.
I added a little more substrate in the foreground to accommodate some Marsilea crenata (aka: Dwarf Four Leaf Clover). This is my first time using this plant so I was excited to find it at the LFS. Grown in its immersed form, it looks like Glosso to me. I've been reading mix reports whether the MC can be grown in low light versus high light. I'm crossing my fingers it will do alright in here.
Still need to swap out the AC 20 for the Palm Filter and lower the light fixture some.
Here's some update pics:.
Little miss Betta checking out her new front lawn.