Time to upgrade again.

I am actually pretty happy with my current one, but after a few years now,
there are a couple of things I want to change.

1) Use the water coming from main tank to sump, not a separate pump.
I am tired of the cost of that extra electricity, and the various leaks I have had.

2) Put the scrubber inside the sump a bit.
I am having moisture and space issues, so really want to consolidate things.

3) Easier to get to.
To get to my current scrubber, I need a ladder. Really.

4) Easier to clean slot, with less buildup.
It is easy to clean my current screens, but not the slot.
Plus I do not have anything blocking light from hitting slot.

5) A bit smaller.
It was built with the old sizing rules.

It will still be a standard two sided waterfall type scrubber. LED lights.
I looked a lot at the new UAS, but I am not sold on that.

As reference, my old version 3 thread is here:
http://algaescrubber.net/forums/show...cal-LED-bigger
Versions 1 and 2 are around somewhere on these forums as well, but so old I forgot where.

Lots of details and pictures to follow over the next few weeks.