Per request -
the UGLIEST and CHEEPEST Alage Turf Scrubber: (embarassing - but I had all the stuff to make it {except screen} and from planning to running was 1 day)
It sits over the 75g sump - but since the whole system is/was running - the TS had to be built within the stand and designed be removed in total too - without interrupting tank opperations...AND the distance from the bottom of the satnd to the top of the 75g sump is only 5.5" . . ATS maintenance (screen removal) is easy, as the 3 PVC tubes holding the screens come straight out and the bulbs (dual 55w pc) slide out same way. The third light is out of picture to the right - but is a little spun aluminum job with a 6500k florescent in it.
The top plate (to protect the wood stand) measures 16 by 18. All 4 sides to it hang down into the sump from the top plate and are hinged. There are 3 screens (10" x 14" each) and waterflow is provided by a 1100 lph (290 gph) submersible pump in the sump. There is an inline ball valve to control flow - but it runs wide open.
In the beginning - a 75g standard glass tank/sump seemed PLENTY big - but throw in (& maintain) 2 skimmers, 2 filter bags, a CA reactor, return pump snorkel - and have bubble traps - and it kinda got tight......of course this is realized after 3 tons of tank are on top of the stand, and the 75 sump cannot be removed without a partial disassembly of the stand - which I;d NEVER try with a full DT on top.
Both the 75g sump, and 29g tall fuge tanks run just under 1/2 full - and during a power fail - there's 15-20 gallons MORE room than needed below to hold the water in the DT when the siphon breaks.
Admittedly this a "shade tree mechanics" ATS and is not a sexy thing by any means - but it works VERY well - as before I shut off the lights 6 days ago, the glass (except back glass which I will let coraline alage take over) needed cleaning every 10 days - 2 weeks, versus 2 times per week running a fuge with a small trachcan full of grape calupera.