Okay i just gave it a try and I only get 4.4ml at the line
I would guess that the test kit would be calibrated for the line on the tube, maybe it's a compensation for the drop size
Has LE just become part of the names on a lot of these corals lately or is it just me.
I just keep seeing LE this or that and are sold at top dollar on pretty much every coral site or sold from individuals.
The reflectors make the biggest difference for why T5 are so good.
Saying that you wanna stay away from that ebay unit and go with a 6 bulb T5 like the one from hellolights or from reef geek either one should allow you to keep most corals with the SPS up high.
The level in the sump will level out so don't worry about that
You can try adding a PVC right angle to the top of the pipe that leads down to your sump.
http://www.dursostandpipes.com/
I dont use the one that dips below the surfane and have good results