thanks for everyone's help. It seems that the hatch rate at 83F, 3 teaspoons of salt per litre is giving me the same hatch rate as previously, at the unconventional parameters. Both hatch rates are low. I can only conclude that my eggs are old, probably having sat on the shelf of the distributor's warehouse for some time. ------------------------------------------- Jonathan Fung... Reef Geek Dalhousie University Honours Marine Biology Aqua Creations Inc. Assistant Manager writer for Marine Fish Monthly ------------------------------------------- email: fung@is2.dal.ca ------------------------------------------------------------------------- This is the apistogramma mailing list, apisto@listbox.com. For instructions on how to subscribe or unsubscribe or get help, email apisto-request@listbox.com. Search http://altavista.digital.com for "Apistogramma Mailing List Archives"!