I avoid this Problems by adding 5-10% of seasalt (as used for coral-reef-aquariums) to the normal salt (NaCl). This give a pH-value sure above 7, and the artemias survive some days - if I feed them, until they are adult. Hubert Wischmann Oberhausen Germany --------------- See http://www.aka.org/AKA/subkillietalk.html to unsubscribe Join the AKA at http://www.aka.org/AKA/Applic.htm