Din ciclul "stiati ca".

Acum cateva saptamani am avut un mic ph-drop. Sa zicem ca am ajuns in jur de 6.0-6.5 de la 7. Nu a patit nici o vietuitoare nimic, dar a aparut un mic film la suprafata apei. Hmmm mi-am zis si am uitat incidentul.
Azi gasesc urmatorul site:

http://www.bioconlabs.com/nitribactfacts.html

unde scriu baietii urmatoarele:
"
The optimum pH range for Nitrosomonas is between 7.8-8.0.
The optimum pH range for Nitrobacter is between 7.3-7.5

Nitrobacter will grow more slowly at the high pH levels typical of marine aquaria and preferred by African Rift Lake Cichlids. Initial high nitrite concentrations may exist. At pH levels below 7.0, Nitrosomonas will grow more slowly and increases in ammonia may become evident. Nitrosomonas growth is inhibited at a pH of 6.5. All nitrification is inhibited if the pH drops to 6.0 or less. Care must be taken to monitor ammonia if the pH begins to drop close to 6.5. At this pH almost all of the ammonia present in the water will be in the mildly toxic, ionized NH3+ state."

Grija, mare grija...