Mat, 74ºF (23º) will cause no real problem. Just remember that Römer found that apisto fry raised at 23ºC (74ºF) turned out to produce 90% or more females. If you find that your apistos decide to breed & give you fry, just raise the temperature in the fry tank to 27ºC (79ºF) for about 4 - 6 weeks & the sex ratio should turn out about equal. As for fluctuations, apistos can handle fluctuations of 10ºF (6ºC) over a 24 hour period. Mike Wise Matt & Linda Crocker wrote: > Does any know the temp fluctuation that our apisto's can easily withstand? I would like to turn some heaters either down or off for the summer months. All the tanks in the house are great for keeping a comfortable temp in the winter months, not so good for the summer. Most of my tanks are 78F. I have at present, Inca, Hoignei, agassizii, cacatuoides, panduro, and M. ramirezi. Would 74F be OK for everything but the rams? > > Matt > > ----------------------------------------------------------------------- > -- 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. apisto-digest@listbox.com also available. > Web archives at http://lists.thekrib.com/apisto Trading at > http://blox.dropship.org/mailman/listinfo/apisto_trader ----------------------------------------------------------------------- -- 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. apisto-digest@listbox.com also available. Web archives at http://lists.thekrib.com/apisto Trading at http://blox.dropship.org/mailman/listinfo/apisto_trader