Moser, thanks for supporting my theory! Let me explain:
Quote from Krysztof TOTM: "I have tried many different methods, first as a Berlin system, then, for a year, a skimmerless system using a refuge with Miracle Mud and acroalgae, and eventually Zeovit. However, that whole time I have been looking for a method that would be perfect for me."
From this it is obvious that Krysztof was not happy and not having the results he wanted before using BP's. From my experience, I have two old school 20g tanks using only good live rock and powerheads as filtration, no sump, no skimmer. One is almost 5 years old and both are full of SPS and LPS corals. I dose Microbacter, amino's, Iodine, etc from time to time and monthly 2 gallons water changes"¦ that's all. These systems are always at zero nitrates/phosphates and the coral growth and color are good. I don't see why I would need BP for these systems.
On the other hand I have a Softies/LPS's 92g corner system, many fishes , using a sump with 6" DSB and ASM G2 skimmer running for around 5 years. Around 2 years ago it started to accumulate nitrates, usually off the scale 80ppm+ readings. The only way to control them was with big water changes, usually 30g every two weeks. I thought that the DSB was saturated and I eliminated it, but the problem persisted. I tried many things without luck (Brightwell MB7+Biofuel, Probidio+vodka, etc.). Around December 2009 I tried Biopellets and they did wonders. It took around 750ml and 4 months, but progressively the BP's lowered and control the nitrates to around 5ppm. Now I use around 400ml of BP's and GFO to maintain the system.
Don't get me wrong, I like very much what BP's can do, but in this hobby every system is a completely different world and we as hobbyist need to be real. If your system is already low in NO3/PO4 and you are happy with the growth and color of your corals, you don't need BP's. Also, if you are starting a new system you don't need BP's from the beginning. Let the system mature some months and then evaluate if you really need them.
Cheers!