Thanks for posting those pictures.  It looks like most of them are done with a heavy plastic screen with a pvc frame.  Are those pictures of a holding facility or a propagation type setup?

 

Nano Reefer- The best way to get them off the rock is to peel up the foot with your fingernail or a credit card.  When the foot is in a hole it can be almost imposible to get to.  I actually had to break a few pieces of rock to get the hard ones off when moving them to the new tank.  You can try to get them to move on their own by adjusting flow or lighting.  When they are walking the foot is swollen and they are easy to remove.  Some recomend ice on the foot.  Once I made a whole tray of RO/DI water popsicles and couldn't get one to move with them:)  If you can't peel any off the rock I would just turn the rock over on a day you're home and check it every hour to see if they start to move to a  spot that is easy to get to them.  Then, if that doesn't work try pointing one of your powerheads at them.  If you tear the foot a little peeling it of it will probably still make it.  Just take your time and a few breaks if it isn't working out.  Sometimes they start to move and hour later just from the stress you cause on the first attempt.

In general I would give it a couple months because I don't know how much you are feeding, how much light you have, and things like that.

 

Adam

 

Adam

 

Adam

 

 

 

 

 

 

 

 

A few months ago I traded for a 250W MH to light a braceless 75 that was to be a frag tank. With no center brace the top is wide open so I figured a single 250 would light it perfectly, if I could get the light to spread out the full 4 foot length.

So I mapped out the reflective angles and devised a wood frame of plywood and 1x2's. I then carefully cut up the only piece of mirrored aluminum I had left. It needed to fit exactly on the frame without coming up short. It worked! Here are pics of it in the morning when the sun is shining on it. The light comes on from noon to 10PM

 

This site explains how to build the reflector.

 

 

This link has the pattern in different formats.  I used the dwg file with a viewer so I could print it out without all the black.  Then I just had it enlarged at Kinkos.