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he might try.....
The only reason I can think that the 4 tier high set-up would be better is that the water becomes cleaner as it passes through a single tier...not CLEAN, but LESS dirty.....and as it passes through each tray it becomes more clean (exponentially less effective but none the less "cleaner")...so dirty water leaving a four tier system would have been sent through 2x the media as a two tier set up, and therefore would have been more "cleansed" than the same amount of water passing through two tiers.
I AM not saying that is the reason, but that is more plausible than the people that have not been able to understand that the media slows the water flow down so that each time the water exits a tier it is traveling at the same speed as it was exiting the tier above it. Which explains that the speed of the water is NOT the reason for a 4 tier system working better.
If the distance between the trays was increased the speed would increase, but the increase in speed is negligible between a two and four tray system...it is facinating to see people espouse a theory developed from a lack of understanding of the exact topic they are purporting to understand....
(here again the Manufacturer of the product wisely maintains silence. If this were a British product the consumer would have been given a detailed explanation. The manufactuer's decision on how to market the media is to allow the product to become shrouded "mystical properties" and whatever the consumer wants to believe)
oh and tewa...if you read the post HERE where JR questioned the gentleman on his flawed understanding of fluid dynamics/friction/ gravitational pull and such, he Knows the fellah is flawed in his logic....AND HIS QUESTIONS LOOK VERY SIMILAR TO YOURS BACK WHEN i THOUGHT YOU WERE BEING POLITE TO THE FRACTIONATED MIND THAT STILL BELIEVES FIR IS THE REASON BM WORKS. I sincerely thought you were smart enough to know that FIR had nothing to do with the effectiveness of the BMS...which I still believe is a very good, over-priced bit of filtration kit....surrounded by BS so that a segment ( a very large segment) of the hobby can validate spending a considerable amount of money, and believe that there is no ontehr media that can work because of FIR....which they know exiists but haven't used their resources to understand. besides people want to believe their is a god...and a filter system that works all by itself FOREVER...
Porous media Showers are the best thing I can think of to put on a pond After a coarse mechanical filtration apparatus. BM is a good media.
The "science" and logic purported as to why a BMS is the be all end all is extremely flawed and that needs to be understood by today's hobbyist NOW.
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