KirkyArcher
Fish Addict
Where is such information available on the types of nitrite oxidizing bacteria contained within products TwoTankAmin?
Don’t miss out on the best deals of the season! Shop now 🎁
daizeUK said:Most manufacturers are suspiciously secretive about the type of bacteria they have in their products which is why we don't trust them. Dr Tim is about the only one who has really done extensive research and made it public which is why his One and Only product has such a strong scientific basis. The rest is snake oil as far as I'm concerned unless they publish research to prove otherwise.
rms said:
Edit (Just to add at no point did these fish exhibit any surface swimming or gasping associated with Ammonia poisoning) Edit
I thought gasping was a sign of nitrite poisoning? I only ask because I'm new to the hobby and now confused...
from http/www.drtimsaquatics.com/wp-content/files/scientificpapers/hovanecAEM_Jan98.pdfAquaria which received a commercial preparation containing Nitrobacter species did not show evidence of Nitrobacter growth and development but did develop substantial populations of Nitrospira-like species. Time series analysis of rDNA phylotypes on aquaria biofilms by DGGE, combined with nitrite and nitrate analysis, showed a correspondence between the appearance of Nitrospira-like bacterial ribosomal DNA and the initiation of nitrite oxidation. In total, the data suggest that Nitrobacter winogradskyi and close relatives were not the dominant nitrite-oxidizing bacteria in freshwater aquaria. Instead, nitrite oxidation in freshwater aquaria appeared to be mediated by bacteria closely related to Nitrospira moscoviensis and Nitrospira marina........
Results regarding the beneficial effects of the addition of a bacterial additive containing Nitrobacter species were equivocal. While nitrite levels in treated aquaria decreased earlier than those in nontreated aquaria, there was no evidence that Nitrobacter species were actively growing in these aquaria. It is possible that the levels of Nitrobacter species were below the limits of detection of our techniques. However, since Nitrospira-like bacteria were readily detected and that their establishment coincided with nitrite oxidation we postulate that Nitrospira-like organisms, and not Nitrobacter species, are the major nitrite oxidizers in the freshwater aquarium environment. It is possible that the addition of bacterial mixtures supplies vitamins and other nutrients which generally stimulate the growth of the nitrifying assemblages, fostering their growth and development and indirectly stimulating nitrite oxidation..........
We chose to use universal and domain primers rather than group-specific primers, since previous analysis suggested that nitrite oxidizers other than Nitrobacter might be involved in nitrification in aquaria (9). Combined monitoring of environmental conditions (water chemistry) with bacterial assemblage analysis (DGGE) allowed us to detect a correspondence between nitrite oxidation and Nitrospira-like rRNA. By monitoring samples over time, changes in the microbial assemblage were evident.