warm weather & tank temperatures

90% or maybe even more of your bacteria are in your filter media.....thats why you should not replace it until absolutely nessessary.....i have some filter foam that is 4-5 years old

I've got some sponges that are nearly 30 :eek:
 
Thanks for all of the help, folks. We seem to be doing okay, keeping the fans on and the hoods off. I've been putting the lights on the evening for a few hours, and that seems to go okay, too.
 

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