Tetra's directions are somewhat lacking in detail. But it is the right bacteria which is not the case with most products that claim they establish one's bio-filtration. The deatils of it all are much better explained byt Dr, Hovanec whic actually discovered the bacteria listed in Stfae Start or Safe Start Plus. When Dr. H. did som he worked as the cheief scuentest at the Marineland labs. So he and Mrineland shared the patents involved. When Marineland was bought by a conglomerate for thei pet division, they are owns Tetra. So part ownership of the petent went
with Marineland and the parent company moved it to the Tetra part of th operation and they created Safe Start.
Dr. Hovanec did not wish to go with Marineland and he took over the Marineland factility in CA. and started his own business.
When I say that Tetra's instruction for using Safe Start areacking in detail I was being kind.. They are actually awful. They have taken a very good product and made it hard to use.
On the other hand, Dr. Hovanec's One and Only Nirtifying Bacteria constains the same strains of live bacteria but his directions on use are much more detailed and easy to follow.
The bacteria are pretty hardy. However, if you ket them freeze, they die. If you let the get too warm they die. Tetra is off base but safe when they say "Do not expose to temperatures above 30°C or below 2°C." The 30C is on the low side. Here is how Dr. Hovanec puts it:
Temperatures During Shipping – Nitrifying bacteria are relatively tough bacteria especially ours because we grow them on a small particle (which is why you need to shake the bottle well before adding them to the tank). They tolerate heat very well and only when exposed to temperatures over 130°F for several days do they suffer. At the other extreme, they do not survive freezing and if the bottle arrives frozen solid chances are the bacteria did not survive. If the temperatures in your area are at either of these extremes purchase the extreme weather package
I am not sure re that !30F number above. I am wondering if it wasn't a typo and should be 120F (49C). I have contacted Dr. H. and asked about this. Just as an FYI- there are multiple strains of Nitrosomonas (an ammonia oxidizing bacteria) and here is some science.
Itoh, Y., Sakagami, K., Uchino, Y., Boonmak, C., Oriyama, T., Tojo, F., Matsumoto, M. and Morikawa, M., 2013. Isolation and characterization of a thermotolerant ammonia-oxidizing bacterium Nitrosomonas sp. JPCCT2 from a thermal power station.
Microbes and environments,
28(4), pp.432-435.
A thermotolerant ammonia-oxidizing bacterium strain JPCCT2 was isolated from activated sludge in a thermal power station. Cells of JPCCT2 are short non-motile rods or ellipsoidal. Molecular phylogenetic analysis of 16S rRNA gene sequences demonstrated that JPCCT2 belongs to the genus Nitrosomonas with the highest similarity to Nitrosomonas nitrosa Nm90 (100%), Nitrosomonas sp. Nm148 (99.7%), and Nitrosomonas communis Nm2 (97.7%). However, G+C content of JPCCT2 DNA was 49.1 mol% and clearly different from N. nitrosa Nm90, 47.9%. JPCCT2 was capable of growing at temperatures up to 48°C, while N. nitrosa Nm90 and N. communis Nm2 could not grow
at 42°C. Moreover, JPCCT2 grew similarly at concentrations of carbonate 0 and 5 gL−1. This is the first report that Nitrosomonas bacterium is capable of growing at temperatures higher than 37°C.
from https
/www.jstage.jst.go.jp/article/jsme2/28/4/28_ME13058/_pdff