if your interested in angels and large ones at that take a look at post 237, sorry about the vid quality crappy phone video but you can get the point ....I too had to take a second look at some nitrate issues and now have it down to around 20 and working on getting it lower with some more filtration ideas and different water changing schedules......cant wait to see the changes you incorporate the building process is the fun part.....
http://www.reefcentral.com/forums/showthread.php?t=2147084&page=10
Lawrence,
As part of this rebuild are you going to change the top of your canopy, so that the cabinet work comes down over the top of the tank and hides the water line?
Your old configuration the upper cabinets looked like they were sitting on top of the tank. I think covering the water line would give a much nicer finish to the final project.
Dave B
I thought the cement caused the lower pH?