Mada smo vec naceli ovu temu mislim da se tu jos puno ima za reci. Cilj ove rasprave nije da dodjemo do nekih novih spoznaja,nego da budemo sto bolje upuceni u postojece cinjenice da bisami mogli kriticki analizirati i na kraju mozda prosuditi koji je stav blize istini.
u pitanju su su proizvodi za cikliranje vode-bakterijski starteri. Da li su oni stvarno potrebni,da li kuture bakterija dostatne za ciklus,kako te bakterije prezive i da li su zive(u ocekivanoj koncentraciji)........
ne da mi se prepricavati cijelu pricu,to sam vec pokusao pa izgleda da me neki nisu razumjeli. Dolje mozete procitati dijelove nekih clanaka koje sam do sada nasao,neke jos cekam da mi posalju,nisu na netu, ali ti su vise da zadovoljim svoje ludilo jer vas ne zeli maltretirati s mikrobiologijom.
Prije citanja ulomaka clanaka(iz kojih sam izvadio najbitnije) htio bih da pogledate kratku raspravu s "tomovog placa".
http://features.aaquaria.com/repository/cyclingammonia.shtmlNitrifiers prefer a
pH level from 7 - up to mid 8's. However, a stable pH level with no fluctuations is more important. This also relates to most fish kept in an aquarium. Fish can take pH levels slightly out of their preferred range, but not the fluctuation. The goal in either case is a stable pH.
More recently, products containing colonies of nitrifying bacteria have become available at pet shops (e.g., ``Fritz'', ``Bio-zyme'', ``Cycle''). In theory, adding the bacteria jump-starts the colonization process as above. Net experience with such products has been mixed; some folks report success, while others report they don't work at all. In principle, such products should work well. However, nitrifying bacteria cannot live indefinitely without oxygen and food. Thus, the effectiveness of a product depends on its freshness and can be adversely effected by poor handling (e.g., overheating). Unfortunately, these products don't come with a freshness date, so there is no way to know how old they are
Products that contain starter bacterial colonies should be avoided. The effectiveness of these products is questionable and they may encourage cloudy water & algae problems later on. The bacteria that we are trying to promote by cycling occur naturally and only need fish wastes, oxygen & time to develop. Products that adjust pH levels should also be avoided as they tend to cause drastic pH changes and cloudy water troubles as well.
There are two problems with these products, one is the freshness issue mentioned in the article on
cycling, and the other is the fact that our previous assumptions about the specific bacteria responsible for the cycling process may be WRONG! Nitrosomonas and Nitrobacter bacteria have traditionally been assumed to perform the function of converting ammonia to nitrate in aquaria. However, they were identified using bacterial culturing techniques that were prone to errors. Dr. Tim Hovanec, using modern RNA analysis, found almost none of these bacteria in mature freshwater aquaria. Instead, he found large populations of Nitrospiras that could be performing these nitrifying functions. His research was published in the scientific literature in 1996 (the August issue of
Applied and Environmental Microbiology) and in the December 1996 and January 1997 issues of
Aquarium Fish Magazine. If his research conclusions are correct, then these commercial products such as
Cycle and
Sure-Start are packaging the wrong bacteria! My opinion is that you would be better off saving your
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