DSB, in my adventures I don't regret having a DSB excluding the cost. I had a 4 to 6 inch DSB in my 100g tank & a 3" DSB in my first 30g tank. I've seen some interesting things going on there that gave me a Deep interest in them. In my 30g tank I had problems, mostly with stability & water quality. I was obedient to my LFS at first, loosing fish & not really understanding why. One of my biggest problems was water changes, you see in a smaller tank, a spike would be detrimental to fish & live stock, it didn't take much. I would do monthly water changes but that wasn't enough, for the fish I had required more frequent changes, I had that 3" DSB, Aqua Medic skimmer & a penguin hang filter with the floss & carbon pack. I had a 40w light and about 45lbs of LR. I was able to keep certain fish regardless of the spikes but also lost some nice fish. I was at my end I couldn't keep loosing fish etc. like this, I just hate it because I knew I would have to quit because it just isn't humane. One day at work I hit up on forums, I never had the desire to become a member & become a part of an online group, but this is where my life as an aquarist has changed. I reverted back to a simple system, with only the few fish I had (Green Chromis) & a coral bandit. I hit the online forums hard as work allowed, during lunch etc. I learned so much the first year, It made me want to go hit someone at the LFS lol, but I knew better. My husbandry skills were bad, not because I was lazy but more so I just didn't know. It was about then a new LFS opened up, only salt water, this guy was really great, alone with the information I've learned online & from him I went on to the next step, he got me the 100g tank I have now. I couldn't believe what I was doing, I still haven't been successful to date but yet going in deep. I was learning reef chemistry & husbandry, DSB's were very hot so I was neck deep into them, although my original plan was a thin bed. Although I was online for some time now, I really wasn't familiar with who's who & in some ways was miss lead at times, finding guys like Mike opened up the reality of the whole thing, but unfortunately it was way later before that had happened. Ok, In January I finally got my new tank, I had planned my filtration out using a DSB, skimmer, LR & not much more. I had ordered lights & most of the necessary equipment before even getting the tank, I was pushing the limits of the hood and the length of the VHO's but I wanted the longest I could fit inside, at the time MH was considered but I didn't think it was that important, I was headed towards a fish & softy reef set-up, incorporating the DSB. Finally I had it going, the DSB was in place, I had it seeded from my little tank & ordered a few kits to diversify. I was in heavy reading on DSB's, I had a nice looking tank, it was coming along rather well for a beginner, I didn't have it loaded down heavy because I still was learning & was trying to provide the best home possible. In the beginning I everything went well but after about 6 months I kept going through algae break outs, at times it would get bad, & reading my eyes off. Here I was learning about husbandry, I had to learn somehow to keep the self sustaining system working properly. One thing was water changes, I needed to learn how much was required for my system & if I ever added more, I would have to adjust accordingly. This wasn't an easy cut and dry task, I had to experiment wait to see what happened, If I changed enough water at one time or would I have to do larger volume changes all at once & also how often would this be necessary, it has gotten better but to date it still is an ongoing learning & tweaking ( I love Tweaking), it is necessary. In a DSB you needed circulation, you can't go crazy over the sand because it would blow sand everywhere but you needed to keep the waste spread out over the sand surface so the waste can be captured in the DSB processing system. This is also another learning process necessary to tweak, trial and error. How do you ever get good flow through the tank, suspend what waste you can so the skimmer can pick it up & the rest can be processed by the DSB. I had squids, several pumps, PH water everywhere & still trying not to blow up a sand storm. I also had bouts with critters, mainly snails, hermits etc, seems like they won't necessary all get along in a small glass cage either, this takes a well balance to fit into your particular system. Again fighting algae problems, I continued hitting forums, after a while it was all blowing up, heated discussions everywhere I looked, seems like thousands of people suddenly had the same occurring problems. It was about this time, again I hit another level of learning, we got into deep discussions of DSB's, husbandry, feeding the tank, food sources, it was getting very difficult for someone like me, with no experience but I kept reading, I couldn't offer much of help or input but I kept reading throwing in a joke every now and then to let everyone I was there. I spent a year discussing DSB's before I've realized it was already time for a change, I also found a group of people that really had a passion for this hobby, actually it is more than a hobby, it is a life style, it is embedded into these people, I'm grateful for their dedication & willingness to share their experience with everyone. This continues to the next chapter, so I'll stop on the DSB & husbandry, it is still an ongoing process ever evolving but this is also part of what makes this so wonderful, DSB's have come a long way, husbandry also has come into it as being very important part of any reef system, each a little different but equally important, this was my experience with DSB's even though it was rather short period, is was a great learning process.