I have used them with very impresive results. I have set up about 5 of them on customers tanks and must say i was skeptical at first but am a believer now! I though so much of them that i started too carry them. I would reccomand them. You can also make your own if you wanted. They do sell the mud seperatly.
yeah they are alright i am using one now on my 10 g and i like it but the mud is so darn expensive it almost seems silly. i think i would much rather perfer using a sump with a DSB and alot of macros instead. JMHO
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"The brighter you are, the more you have to learn."
-Don Herold
Just suction cup it to the side in the main refugium.I do use silicon on the suction cups to hold them permanently in place so they do not get knocked off. Just keep the macros off it during regular pruning.