Ok, nu är jag inte avis längre
Har en liten fundering på önskvärd halt Si i vattnet. Har hittat en artikel av Randy Holmes-Farley:
https://www.advancedaquarist.com/2003/1/aafeature1
Där skriver han bland annat om svampdjur:
In the case of the sponges Suberites domuncula and Tethya auranita, an enzyme called silicatein is produced. When the silicate concentration is increased in the surrounding water from 1 mM (0.06 ppm SiO2) to 60 mM (3.6 ppm SiO2), the gene responsible for silicatein is strongly up- regulated, along with that for collagen.16 These experiments suggest that the sponge may be able to take advantage of silica concentrations as high as 60 mM, or alternatively, may be restricted in it’s growth, at levels below 60 mM.
Så en lämplig nivå kanske ligger runt 3 mg/l?
Vad mäter Salifert? Si eller SiO2?
Vad doserar du? Vattenglas?